diff --git a/generator/pom.xml b/generator/pom.xml
index 0fb354bf..c910bba6 100644
--- a/generator/pom.xml
+++ b/generator/pom.xml
@@ -38,6 +38,6 @@
     </build>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <openapi-generator-version>7.11.0</openapi-generator-version>
+        <openapi-generator-version>7.21.0</openapi-generator-version>
     </properties>
 </project>
diff --git a/src/clients/channel-access-token/lib/Api/ChannelAccessTokenApi.php b/src/clients/channel-access-token/lib/Api/ChannelAccessTokenApi.php
index 417a5bb5..feb06dfd 100644
--- a/src/clients/channel-access-token/lib/Api/ChannelAccessTokenApi.php
+++ b/src/clients/channel-access-token/lib/Api/ChannelAccessTokenApi.php
@@ -16,7 +16,7 @@
  */
 /**
  * ChannelAccessTokenApi
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -49,8 +49,11 @@
 use GuzzleHttp\Psr7\MultipartStream;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 use LINE\Clients\ChannelAccessToken\ApiException;
 use LINE\Clients\ChannelAccessToken\Configuration;
+use LINE\Clients\ChannelAccessToken\FormDataProcessor;
 use LINE\Clients\ChannelAccessToken\HeaderSelector;
 use LINE\Clients\ChannelAccessToken\ObjectSerializer;
 
@@ -215,34 +218,15 @@ public function getsAllValidChannelAccessTokenKeyIdsWithHttpInfo($clientAssertio
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ChannelAccessToken\Model\ChannelAccessTokenKeyIdsResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ChannelAccessToken\Model\ChannelAccessTokenKeyIdsResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ChannelAccessToken\Model\ChannelAccessTokenKeyIdsResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ChannelAccessToken\Model\ChannelAccessTokenKeyIdsResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -256,34 +240,11 @@ public function getsAllValidChannelAccessTokenKeyIdsWithHttpInfo($clientAssertio
                 );
             }
 
-            $returnType = '\LINE\Clients\ChannelAccessToken\Model\ChannelAccessTokenKeyIdsResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ChannelAccessToken\Model\ChannelAccessTokenKeyIdsResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -293,8 +254,10 @@ public function getsAllValidChannelAccessTokenKeyIdsWithHttpInfo($clientAssertio
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -539,61 +502,21 @@ public function issueChannelTokenWithHttpInfo($grantType, $clientId, $clientSecr
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ChannelAccessToken\Model\IssueShortLivedChannelAccessTokenResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ChannelAccessToken\Model\IssueShortLivedChannelAccessTokenResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ChannelAccessToken\Model\IssueShortLivedChannelAccessTokenResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ChannelAccessToken\Model\IssueShortLivedChannelAccessTokenResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\ChannelAccessToken\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ChannelAccessToken\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ChannelAccessToken\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ChannelAccessToken\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -607,34 +530,11 @@ public function issueChannelTokenWithHttpInfo($grantType, $clientId, $clientSecr
                 );
             }
 
-            $returnType = '\LINE\Clients\ChannelAccessToken\Model\IssueShortLivedChannelAccessTokenResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ChannelAccessToken\Model\IssueShortLivedChannelAccessTokenResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -644,7 +544,7 @@ public function issueChannelTokenWithHttpInfo($grantType, $clientId, $clientSecr
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -652,8 +552,10 @@ public function issueChannelTokenWithHttpInfo($grantType, $clientId, $clientSecr
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -778,17 +680,16 @@ public function issueChannelTokenRequest($grantType, $clientId, $clientSecret, s
 
 
         // form params
-        if ($grantType !== null) {
-            $formParams['grant_type'] = ObjectSerializer::toFormValue($grantType);
-        }
-        // form params
-        if ($clientId !== null) {
-            $formParams['client_id'] = ObjectSerializer::toFormValue($clientId);
-        }
-        // form params
-        if ($clientSecret !== null) {
-            $formParams['client_secret'] = ObjectSerializer::toFormValue($clientSecret);
-        }
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+            'grant_type' => $grantType,
+            'client_id' => $clientId,
+            'client_secret' => $clientSecret,
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
 
         $headers = $this->headerSelector->selectHeaders(
             ['application/json', ],
@@ -902,34 +803,15 @@ public function issueChannelTokenByJWTWithHttpInfo($grantType, $clientAssertionT
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ChannelAccessToken\Model\IssueChannelAccessTokenResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ChannelAccessToken\Model\IssueChannelAccessTokenResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ChannelAccessToken\Model\IssueChannelAccessTokenResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ChannelAccessToken\Model\IssueChannelAccessTokenResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -943,34 +825,11 @@ public function issueChannelTokenByJWTWithHttpInfo($grantType, $clientAssertionT
                 );
             }
 
-            $returnType = '\LINE\Clients\ChannelAccessToken\Model\IssueChannelAccessTokenResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ChannelAccessToken\Model\IssueChannelAccessTokenResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -980,8 +839,10 @@ public function issueChannelTokenByJWTWithHttpInfo($grantType, $clientAssertionT
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1106,17 +967,16 @@ public function issueChannelTokenByJWTRequest($grantType, $clientAssertionType,
 
 
         // form params
-        if ($grantType !== null) {
-            $formParams['grant_type'] = ObjectSerializer::toFormValue($grantType);
-        }
-        // form params
-        if ($clientAssertionType !== null) {
-            $formParams['client_assertion_type'] = ObjectSerializer::toFormValue($clientAssertionType);
-        }
-        // form params
-        if ($clientAssertion !== null) {
-            $formParams['client_assertion'] = ObjectSerializer::toFormValue($clientAssertion);
-        }
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+            'grant_type' => $grantType,
+            'client_assertion_type' => $clientAssertionType,
+            'client_assertion' => $clientAssertion,
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
 
         $headers = $this->headerSelector->selectHeaders(
             ['application/json', ],
@@ -1238,34 +1098,15 @@ public function issueStatelessChannelTokenWithHttpInfo($grantType = null, $clien
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ChannelAccessToken\Model\IssueStatelessChannelAccessTokenResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ChannelAccessToken\Model\IssueStatelessChannelAccessTokenResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ChannelAccessToken\Model\IssueStatelessChannelAccessTokenResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ChannelAccessToken\Model\IssueStatelessChannelAccessTokenResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1279,34 +1120,11 @@ public function issueStatelessChannelTokenWithHttpInfo($grantType = null, $clien
                 );
             }
 
-            $returnType = '\LINE\Clients\ChannelAccessToken\Model\IssueStatelessChannelAccessTokenResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ChannelAccessToken\Model\IssueStatelessChannelAccessTokenResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1316,8 +1134,10 @@ public function issueStatelessChannelTokenWithHttpInfo($grantType = null, $clien
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1436,25 +1256,18 @@ public function issueStatelessChannelTokenRequest($grantType = null, $clientAsse
 
 
         // form params
-        if ($grantType !== null) {
-            $formParams['grant_type'] = ObjectSerializer::toFormValue($grantType);
-        }
-        // form params
-        if ($clientAssertionType !== null) {
-            $formParams['client_assertion_type'] = ObjectSerializer::toFormValue($clientAssertionType);
-        }
-        // form params
-        if ($clientAssertion !== null) {
-            $formParams['client_assertion'] = ObjectSerializer::toFormValue($clientAssertion);
-        }
-        // form params
-        if ($clientId !== null) {
-            $formParams['client_id'] = ObjectSerializer::toFormValue($clientId);
-        }
-        // form params
-        if ($clientSecret !== null) {
-            $formParams['client_secret'] = ObjectSerializer::toFormValue($clientSecret);
-        }
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+            'grant_type' => $grantType,
+            'client_assertion_type' => $clientAssertionType,
+            'client_assertion' => $clientAssertion,
+            'client_id' => $clientId,
+            'client_secret' => $clientSecret,
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
 
         $headers = $this->headerSelector->selectHeaders(
             ['application/json', ],
@@ -1562,10 +1375,11 @@ public function revokeChannelTokenWithHttpInfo($accessToken, string $contentType
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -1657,9 +1471,14 @@ public function revokeChannelTokenRequest($accessToken, string $contentType = se
 
 
         // form params
-        if ($accessToken !== null) {
-            $formParams['access_token'] = ObjectSerializer::toFormValue($accessToken);
-        }
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+            'access_token' => $accessToken,
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
 
         $headers = $this->headerSelector->selectHeaders(
             [],
@@ -1771,10 +1590,11 @@ public function revokeChannelTokenByJWTWithHttpInfo($clientId, $clientSecret, $a
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -1886,17 +1706,16 @@ public function revokeChannelTokenByJWTRequest($clientId, $clientSecret, $access
 
 
         // form params
-        if ($clientId !== null) {
-            $formParams['client_id'] = ObjectSerializer::toFormValue($clientId);
-        }
-        // form params
-        if ($clientSecret !== null) {
-            $formParams['client_secret'] = ObjectSerializer::toFormValue($clientSecret);
-        }
-        // form params
-        if ($accessToken !== null) {
-            $formParams['access_token'] = ObjectSerializer::toFormValue($accessToken);
-        }
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+            'client_id' => $clientId,
+            'client_secret' => $clientSecret,
+            'access_token' => $accessToken,
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
 
         $headers = $this->headerSelector->selectHeaders(
             [],
@@ -2006,34 +1825,15 @@ public function verifyChannelTokenWithHttpInfo($accessToken, string $contentType
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -2047,34 +1847,11 @@ public function verifyChannelTokenWithHttpInfo($accessToken, string $contentType
                 );
             }
 
-            $returnType = '\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -2084,8 +1861,10 @@ public function verifyChannelTokenWithHttpInfo($accessToken, string $contentType
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -2190,9 +1969,14 @@ public function verifyChannelTokenRequest($accessToken, string $contentType = se
 
 
         // form params
-        if ($accessToken !== null) {
-            $formParams['access_token'] = ObjectSerializer::toFormValue($accessToken);
-        }
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+            'access_token' => $accessToken,
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
 
         $headers = $this->headerSelector->selectHeaders(
             ['application/json', ],
@@ -2302,34 +2086,15 @@ public function verifyChannelTokenByJWTWithHttpInfo($accessToken, string $conten
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -2343,34 +2108,11 @@ public function verifyChannelTokenByJWTWithHttpInfo($accessToken, string $conten
                 );
             }
 
-            $returnType = '\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ChannelAccessToken\Model\VerifyChannelAccessTokenResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -2380,8 +2122,10 @@ public function verifyChannelTokenByJWTWithHttpInfo($accessToken, string $conten
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -2564,8 +2308,59 @@ protected function createHttpClientOption()
             }
         }
 
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
         return $options;
     }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
     /**
      * Issue a stateless channel access token by JWT assertion.
      *
diff --git a/src/clients/channel-access-token/lib/ApiException.php b/src/clients/channel-access-token/lib/ApiException.php
index 28545f48..1fc0d90d 100644
--- a/src/clients/channel-access-token/lib/ApiException.php
+++ b/src/clients/channel-access-token/lib/ApiException.php
@@ -16,7 +16,7 @@
  */
 /**
  * ApiException
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/Configuration.php b/src/clients/channel-access-token/lib/Configuration.php
index 5542f992..14ac0baf 100644
--- a/src/clients/channel-access-token/lib/Configuration.php
+++ b/src/clients/channel-access-token/lib/Configuration.php
@@ -16,7 +16,7 @@
  */
 /**
  * Configuration
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -44,7 +44,7 @@
 
 /**
  * Configuration Class Doc Comment
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -138,6 +138,20 @@ class Configuration
      */
     protected $tempFolderPath;
 
+    /**
+     * Path to a certificate file, for mTLS
+     *
+     * @var string
+     */
+    protected $certFile;
+
+    /**
+     * Path to a key file, for mTLS
+     *
+     * @var string
+     */
+    protected $keyFile;
+
     /**
      * Constructor
      */
@@ -411,6 +425,49 @@ public function getTempFolderPath()
         return $this->tempFolderPath;
     }
 
+    /**
+     * Sets the certificate file path, for mTLS
+     *
+     * @return $this
+     */
+     public function setCertFile($certFile)
+     {
+        $this->certFile = $certFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate file path, for mTLS
+     *
+     * @return string Certificate file path
+     */
+    public function getCertFile()
+    {
+        return $this->certFile;
+    }
+
+    /**
+     * Sets the certificate key path, for mTLS
+     *
+     * @return $this
+     */
+     public function setKeyFile($keyFile)
+     {
+        $this->keyFile = $keyFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate key path, for mTLS
+     *
+     * @return string Certificate key path
+     */
+    public function getKeyFile()
+    {
+        return $this->keyFile;
+    }
+    
+
     /**
      * Gets the default configuration instance
      *
diff --git a/src/clients/channel-access-token/lib/FormDataProcessor.php b/src/clients/channel-access-token/lib/FormDataProcessor.php
new file mode 100644
index 00000000..b0f726fa
--- /dev/null
+++ b/src/clients/channel-access-token/lib/FormDataProcessor.php
@@ -0,0 +1,261 @@
+<?php
+/**
+ * Copyright 2026 LINE Corporation
+ *
+ * LINE Corporation licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+/**
+ * FormDataProcessor
+ * PHP version 7.4
+ *
+ * @category Class
+ * @package  LINE\Clients\ChannelAccessToken
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+
+/**
+ * Channel Access Token API
+ *
+ * This document describes Channel Access Token API.
+ *
+ * The version of the OpenAPI document: 0.0.1
+ * Generated by: https://openapi-generator.tech
+ * Generator version: 7.21.0
+ */
+
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+namespace LINE\Clients\ChannelAccessToken;
+
+use ArrayAccess;
+use DateTime;
+use GuzzleHttp\Psr7\Utils;
+use Psr\Http\Message\StreamInterface;
+use SplFileObject;
+use LINE\Clients\ChannelAccessToken\Model\ModelInterface;
+
+/**
+ * FormDataProcessor Class Doc Comment
+ *
+ * @category Class
+ * @package  LINE\Clients\ChannelAccessToken
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+class FormDataProcessor
+{
+    /**
+     * Tags whether payload passed to ::prepare() contains one or more
+     * SplFileObject or stream values.
+     */
+    public bool $has_file = false;
+
+    /**
+     * Take value and turn it into an array suitable for inclusion in
+     * the http body (form parameter). If it's a string, pass through unchanged
+     * If it's a datetime object, format it in ISO8601
+     *
+     * @param array<string|bool|array|DateTime|ArrayAccess|SplFileObject> $values the value of the form parameter
+     *
+     * @return array [key => value] of formdata
+     */
+    public function prepare(array $values): array
+    {
+        $this->has_file = false;
+        $result = [];
+
+        foreach ($values as $k => $v) {
+            if ($v === null) {
+                continue;
+            }
+
+            $result[$k] = $this->makeFormSafe($v);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Flattens a multi-level array of data and generates a single-level array
+     * compatible with formdata - a single-level array where the keys use bracket
+     * notation to signify nested data.
+     *
+     * credit: https://github.com/FranBar1966/FlatPHP
+     */
+    public static function flatten(array $source, string $start = ''): array
+    {
+        $opt = [
+            'prefix'          => '[',
+            'suffix'          => ']',
+            'suffix-end'      => true,
+            'prefix-list'     => '[',
+            'suffix-list'     => ']',
+            'suffix-list-end' => true,
+        ];
+
+        if ($start === '') {
+            $currentPrefix    = '';
+            $currentSuffix    = '';
+            $currentSuffixEnd = false;
+        } elseif (array_is_list($source)) {
+            $currentPrefix    = $opt['prefix-list'];
+            $currentSuffix    = $opt['suffix-list'];
+            $currentSuffixEnd = $opt['suffix-list-end'];
+        } else {
+            $currentPrefix    = $opt['prefix'];
+            $currentSuffix    = $opt['suffix'];
+            $currentSuffixEnd = $opt['suffix-end'];
+        }
+
+        $currentName = $start;
+        $result = [];
+
+        foreach ($source as $key => $val) {
+            $currentName .= $currentPrefix.$key;
+
+            if (is_array($val) && !empty($val)) {
+                $currentName .= $currentSuffix;
+                $result += self::flatten($val, $currentName);
+            } else {
+                if ($currentSuffixEnd) {
+                    $currentName .= $currentSuffix;
+                }
+
+                if (is_resource($val)) {
+                    $result[$currentName] = $val;
+                } else {
+                    $result[$currentName] = ObjectSerializer::toString($val);
+                }
+            }
+
+            $currentName = $start;
+        }
+
+        return $result;
+    }
+
+    /**
+     * formdata must be limited to scalars or arrays of scalar values,
+     * or a resource for a file upload. Here we iterate through all available
+     * data and identify how to handle each scenario
+     */
+    protected function makeFormSafe($value)
+    {
+        if ($value instanceof SplFileObject) {
+            return $this->processFiles([$value])[0];
+        }
+
+        if (is_resource($value)) {
+            $this->has_file = true;
+
+            return $value;
+        }
+
+        if ($value instanceof ModelInterface) {
+            return $this->processModel($value);
+        }
+
+        if (is_array($value) || (is_object($value) && !$value instanceof \DateTimeInterface)) {
+            $data = [];
+
+            foreach ($value as $k => $v) {
+                $data[$k] = $this->makeFormSafe($v);
+            }
+
+            return $data;
+        }
+
+        return ObjectSerializer::toString($value);
+    }
+
+    /**
+     * We are able to handle nested ModelInterface. We do not simply call
+     * json_decode(json_encode()) because any given model may have binary data
+     * or other data that cannot be serialized to a JSON string
+     */
+    protected function processModel(ModelInterface $model): array
+    {
+        $result = [];
+
+        foreach ($model::openAPITypes() as $name => $type) {
+            $value = $model->offsetGet($name);
+
+            if ($value === null) {
+                continue;
+            }
+
+            if (strpos($type, '\SplFileObject') !== false) {
+                $file = is_array($value) ? $value : [$value];
+                $result[$name] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($value instanceof ModelInterface) {
+                $result[$name] = $this->processModel($value);
+
+                continue;
+            }
+
+            if (is_array($value) || is_object($value)) {
+                $result[$name] = $this->makeFormSafe($value);
+
+                continue;
+            }
+
+            $result[$name] = ObjectSerializer::toString($value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Handle file data
+     */
+    protected function processFiles(array $files): array
+    {
+        $this->has_file = true;
+
+        $result = [];
+
+        foreach ($files as $i => $file) {
+            if (is_array($file)) {
+                $result[$i] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($file instanceof StreamInterface) {
+                $result[$i] = $file;
+
+                continue;
+            }
+
+            if ($file instanceof SplFileObject) {
+                $result[$i] = $this->tryFopen($file);
+            }
+        }
+
+        return $result;
+    }
+
+    private function tryFopen(SplFileObject $file)
+    {
+        return Utils::tryFopen($file->getRealPath(), 'rb');
+    }
+}
diff --git a/src/clients/channel-access-token/lib/HeaderSelector.php b/src/clients/channel-access-token/lib/HeaderSelector.php
index 1e88c359..8ce43a19 100644
--- a/src/clients/channel-access-token/lib/HeaderSelector.php
+++ b/src/clients/channel-access-token/lib/HeaderSelector.php
@@ -16,7 +16,7 @@
  */
 /**
  * HeaderSelector
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/Model/ChannelAccessTokenKeyIdsResponse.php b/src/clients/channel-access-token/lib/Model/ChannelAccessTokenKeyIdsResponse.php
index 8ad6df59..00a5f0d5 100644
--- a/src/clients/channel-access-token/lib/Model/ChannelAccessTokenKeyIdsResponse.php
+++ b/src/clients/channel-access-token/lib/Model/ChannelAccessTokenKeyIdsResponse.php
@@ -17,7 +17,7 @@
 /**
  * ChannelAccessTokenKeyIdsResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/Model/ErrorResponse.php b/src/clients/channel-access-token/lib/Model/ErrorResponse.php
index 702c10b0..fa23678e 100644
--- a/src/clients/channel-access-token/lib/Model/ErrorResponse.php
+++ b/src/clients/channel-access-token/lib/Model/ErrorResponse.php
@@ -17,7 +17,7 @@
 /**
  * ErrorResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/Model/IssueChannelAccessTokenResponse.php b/src/clients/channel-access-token/lib/Model/IssueChannelAccessTokenResponse.php
index b3c50e72..a88e36b8 100644
--- a/src/clients/channel-access-token/lib/Model/IssueChannelAccessTokenResponse.php
+++ b/src/clients/channel-access-token/lib/Model/IssueChannelAccessTokenResponse.php
@@ -17,7 +17,7 @@
 /**
  * IssueChannelAccessTokenResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/Model/IssueShortLivedChannelAccessTokenResponse.php b/src/clients/channel-access-token/lib/Model/IssueShortLivedChannelAccessTokenResponse.php
index d41c2b0c..5ab59c5e 100644
--- a/src/clients/channel-access-token/lib/Model/IssueShortLivedChannelAccessTokenResponse.php
+++ b/src/clients/channel-access-token/lib/Model/IssueShortLivedChannelAccessTokenResponse.php
@@ -17,7 +17,7 @@
 /**
  * IssueShortLivedChannelAccessTokenResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/Model/IssueStatelessChannelAccessTokenResponse.php b/src/clients/channel-access-token/lib/Model/IssueStatelessChannelAccessTokenResponse.php
index cc28f39a..62e4d4ba 100644
--- a/src/clients/channel-access-token/lib/Model/IssueStatelessChannelAccessTokenResponse.php
+++ b/src/clients/channel-access-token/lib/Model/IssueStatelessChannelAccessTokenResponse.php
@@ -17,7 +17,7 @@
 /**
  * IssueStatelessChannelAccessTokenResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/Model/ModelInterface.php b/src/clients/channel-access-token/lib/Model/ModelInterface.php
index 2dd696e8..6dff9d7f 100644
--- a/src/clients/channel-access-token/lib/Model/ModelInterface.php
+++ b/src/clients/channel-access-token/lib/Model/ModelInterface.php
@@ -17,7 +17,7 @@
 /**
  * ModelInterface
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken\Model
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/Model/VerifyChannelAccessTokenResponse.php b/src/clients/channel-access-token/lib/Model/VerifyChannelAccessTokenResponse.php
index f7a63e14..ff712990 100644
--- a/src/clients/channel-access-token/lib/Model/VerifyChannelAccessTokenResponse.php
+++ b/src/clients/channel-access-token/lib/Model/VerifyChannelAccessTokenResponse.php
@@ -17,7 +17,7 @@
 /**
  * VerifyChannelAccessTokenResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ChannelAccessToken
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/channel-access-token/lib/ObjectSerializer.php b/src/clients/channel-access-token/lib/ObjectSerializer.php
index c79cf3ab..4ddad993 100644
--- a/src/clients/channel-access-token/lib/ObjectSerializer.php
+++ b/src/clients/channel-access-token/lib/ObjectSerializer.php
@@ -32,9 +32,8 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
-
 /**
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
  * https://openapi-generator.tech
diff --git a/src/clients/insight/lib/Api/InsightApi.php b/src/clients/insight/lib/Api/InsightApi.php
index daaa8e70..4533e4a5 100644
--- a/src/clients/insight/lib/Api/InsightApi.php
+++ b/src/clients/insight/lib/Api/InsightApi.php
@@ -16,7 +16,7 @@
  */
 /**
  * InsightApi
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -49,8 +49,11 @@
 use GuzzleHttp\Psr7\MultipartStream;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 use LINE\Clients\Insight\ApiException;
 use LINE\Clients\Insight\Configuration;
+use LINE\Clients\Insight\FormDataProcessor;
 use LINE\Clients\Insight\HeaderSelector;
 use LINE\Clients\Insight\ObjectSerializer;
 
@@ -202,34 +205,15 @@ public function getFriendsDemographicsWithHttpInfo(string $contentType = self::c
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\Insight\Model\GetFriendsDemographicsResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\Insight\Model\GetFriendsDemographicsResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\Insight\Model\GetFriendsDemographicsResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\Insight\Model\GetFriendsDemographicsResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -243,34 +227,11 @@ public function getFriendsDemographicsWithHttpInfo(string $contentType = self::c
                 );
             }
 
-            $returnType = '\LINE\Clients\Insight\Model\GetFriendsDemographicsResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\Insight\Model\GetFriendsDemographicsResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -280,8 +241,10 @@ public function getFriendsDemographicsWithHttpInfo(string $contentType = self::c
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -492,34 +455,15 @@ public function getMessageEventWithHttpInfo($requestId, string $contentType = se
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\Insight\Model\GetMessageEventResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\Insight\Model\GetMessageEventResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\Insight\Model\GetMessageEventResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\Insight\Model\GetMessageEventResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -533,34 +477,11 @@ public function getMessageEventWithHttpInfo($requestId, string $contentType = se
                 );
             }
 
-            $returnType = '\LINE\Clients\Insight\Model\GetMessageEventResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\Insight\Model\GetMessageEventResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -570,8 +491,10 @@ public function getMessageEventWithHttpInfo($requestId, string $contentType = se
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -808,34 +731,15 @@ public function getNumberOfFollowersWithHttpInfo($date = null, string $contentTy
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\Insight\Model\GetNumberOfFollowersResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\Insight\Model\GetNumberOfFollowersResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\Insight\Model\GetNumberOfFollowersResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\Insight\Model\GetNumberOfFollowersResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -849,34 +753,11 @@ public function getNumberOfFollowersWithHttpInfo($date = null, string $contentTy
                 );
             }
 
-            $returnType = '\LINE\Clients\Insight\Model\GetNumberOfFollowersResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\Insight\Model\GetNumberOfFollowersResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -886,8 +767,10 @@ public function getNumberOfFollowersWithHttpInfo($date = null, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1124,34 +1007,15 @@ public function getNumberOfMessageDeliveriesWithHttpInfo($date, string $contentT
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\Insight\Model\GetNumberOfMessageDeliveriesResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\Insight\Model\GetNumberOfMessageDeliveriesResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\Insight\Model\GetNumberOfMessageDeliveriesResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\Insight\Model\GetNumberOfMessageDeliveriesResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1165,34 +1029,11 @@ public function getNumberOfMessageDeliveriesWithHttpInfo($date, string $contentT
                 );
             }
 
-            $returnType = '\LINE\Clients\Insight\Model\GetNumberOfMessageDeliveriesResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\Insight\Model\GetNumberOfMessageDeliveriesResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1202,8 +1043,10 @@ public function getNumberOfMessageDeliveriesWithHttpInfo($date, string $contentT
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1446,34 +1289,15 @@ public function getStatisticsPerUnitWithHttpInfo($customAggregationUnit, $from,
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\Insight\Model\GetStatisticsPerUnitResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\Insight\Model\GetStatisticsPerUnitResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\Insight\Model\GetStatisticsPerUnitResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\Insight\Model\GetStatisticsPerUnitResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1487,34 +1311,11 @@ public function getStatisticsPerUnitWithHttpInfo($customAggregationUnit, $from,
                 );
             }
 
-            $returnType = '\LINE\Clients\Insight\Model\GetStatisticsPerUnitResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\Insight\Model\GetStatisticsPerUnitResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1524,8 +1325,10 @@ public function getStatisticsPerUnitWithHttpInfo($customAggregationUnit, $from,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1777,6 +1580,57 @@ protected function createHttpClientOption()
             }
         }
 
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
         return $options;
     }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
 }
diff --git a/src/clients/insight/lib/ApiException.php b/src/clients/insight/lib/ApiException.php
index 119884ad..5b37902c 100644
--- a/src/clients/insight/lib/ApiException.php
+++ b/src/clients/insight/lib/ApiException.php
@@ -16,7 +16,7 @@
  */
 /**
  * ApiException
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Configuration.php b/src/clients/insight/lib/Configuration.php
index 45b6e94b..95d95d52 100644
--- a/src/clients/insight/lib/Configuration.php
+++ b/src/clients/insight/lib/Configuration.php
@@ -16,7 +16,7 @@
  */
 /**
  * Configuration
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -44,7 +44,7 @@
 
 /**
  * Configuration Class Doc Comment
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -138,6 +138,20 @@ class Configuration
      */
     protected $tempFolderPath;
 
+    /**
+     * Path to a certificate file, for mTLS
+     *
+     * @var string
+     */
+    protected $certFile;
+
+    /**
+     * Path to a key file, for mTLS
+     *
+     * @var string
+     */
+    protected $keyFile;
+
     /**
      * Constructor
      */
@@ -411,6 +425,49 @@ public function getTempFolderPath()
         return $this->tempFolderPath;
     }
 
+    /**
+     * Sets the certificate file path, for mTLS
+     *
+     * @return $this
+     */
+     public function setCertFile($certFile)
+     {
+        $this->certFile = $certFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate file path, for mTLS
+     *
+     * @return string Certificate file path
+     */
+    public function getCertFile()
+    {
+        return $this->certFile;
+    }
+
+    /**
+     * Sets the certificate key path, for mTLS
+     *
+     * @return $this
+     */
+     public function setKeyFile($keyFile)
+     {
+        $this->keyFile = $keyFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate key path, for mTLS
+     *
+     * @return string Certificate key path
+     */
+    public function getKeyFile()
+    {
+        return $this->keyFile;
+    }
+    
+
     /**
      * Gets the default configuration instance
      *
diff --git a/src/clients/insight/lib/FormDataProcessor.php b/src/clients/insight/lib/FormDataProcessor.php
new file mode 100644
index 00000000..c18a579a
--- /dev/null
+++ b/src/clients/insight/lib/FormDataProcessor.php
@@ -0,0 +1,261 @@
+<?php
+/**
+ * Copyright 2026 LINE Corporation
+ *
+ * LINE Corporation licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+/**
+ * FormDataProcessor
+ * PHP version 7.4
+ *
+ * @category Class
+ * @package  LINE\Clients\Insight
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+
+/**
+ * LINE Messaging API(Insight)
+ *
+ * This document describes LINE Messaging API(Insight).
+ *
+ * The version of the OpenAPI document: 0.0.1
+ * Generated by: https://openapi-generator.tech
+ * Generator version: 7.21.0
+ */
+
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+namespace LINE\Clients\Insight;
+
+use ArrayAccess;
+use DateTime;
+use GuzzleHttp\Psr7\Utils;
+use Psr\Http\Message\StreamInterface;
+use SplFileObject;
+use LINE\Clients\Insight\Model\ModelInterface;
+
+/**
+ * FormDataProcessor Class Doc Comment
+ *
+ * @category Class
+ * @package  LINE\Clients\Insight
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+class FormDataProcessor
+{
+    /**
+     * Tags whether payload passed to ::prepare() contains one or more
+     * SplFileObject or stream values.
+     */
+    public bool $has_file = false;
+
+    /**
+     * Take value and turn it into an array suitable for inclusion in
+     * the http body (form parameter). If it's a string, pass through unchanged
+     * If it's a datetime object, format it in ISO8601
+     *
+     * @param array<string|bool|array|DateTime|ArrayAccess|SplFileObject> $values the value of the form parameter
+     *
+     * @return array [key => value] of formdata
+     */
+    public function prepare(array $values): array
+    {
+        $this->has_file = false;
+        $result = [];
+
+        foreach ($values as $k => $v) {
+            if ($v === null) {
+                continue;
+            }
+
+            $result[$k] = $this->makeFormSafe($v);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Flattens a multi-level array of data and generates a single-level array
+     * compatible with formdata - a single-level array where the keys use bracket
+     * notation to signify nested data.
+     *
+     * credit: https://github.com/FranBar1966/FlatPHP
+     */
+    public static function flatten(array $source, string $start = ''): array
+    {
+        $opt = [
+            'prefix'          => '[',
+            'suffix'          => ']',
+            'suffix-end'      => true,
+            'prefix-list'     => '[',
+            'suffix-list'     => ']',
+            'suffix-list-end' => true,
+        ];
+
+        if ($start === '') {
+            $currentPrefix    = '';
+            $currentSuffix    = '';
+            $currentSuffixEnd = false;
+        } elseif (array_is_list($source)) {
+            $currentPrefix    = $opt['prefix-list'];
+            $currentSuffix    = $opt['suffix-list'];
+            $currentSuffixEnd = $opt['suffix-list-end'];
+        } else {
+            $currentPrefix    = $opt['prefix'];
+            $currentSuffix    = $opt['suffix'];
+            $currentSuffixEnd = $opt['suffix-end'];
+        }
+
+        $currentName = $start;
+        $result = [];
+
+        foreach ($source as $key => $val) {
+            $currentName .= $currentPrefix.$key;
+
+            if (is_array($val) && !empty($val)) {
+                $currentName .= $currentSuffix;
+                $result += self::flatten($val, $currentName);
+            } else {
+                if ($currentSuffixEnd) {
+                    $currentName .= $currentSuffix;
+                }
+
+                if (is_resource($val)) {
+                    $result[$currentName] = $val;
+                } else {
+                    $result[$currentName] = ObjectSerializer::toString($val);
+                }
+            }
+
+            $currentName = $start;
+        }
+
+        return $result;
+    }
+
+    /**
+     * formdata must be limited to scalars or arrays of scalar values,
+     * or a resource for a file upload. Here we iterate through all available
+     * data and identify how to handle each scenario
+     */
+    protected function makeFormSafe($value)
+    {
+        if ($value instanceof SplFileObject) {
+            return $this->processFiles([$value])[0];
+        }
+
+        if (is_resource($value)) {
+            $this->has_file = true;
+
+            return $value;
+        }
+
+        if ($value instanceof ModelInterface) {
+            return $this->processModel($value);
+        }
+
+        if (is_array($value) || (is_object($value) && !$value instanceof \DateTimeInterface)) {
+            $data = [];
+
+            foreach ($value as $k => $v) {
+                $data[$k] = $this->makeFormSafe($v);
+            }
+
+            return $data;
+        }
+
+        return ObjectSerializer::toString($value);
+    }
+
+    /**
+     * We are able to handle nested ModelInterface. We do not simply call
+     * json_decode(json_encode()) because any given model may have binary data
+     * or other data that cannot be serialized to a JSON string
+     */
+    protected function processModel(ModelInterface $model): array
+    {
+        $result = [];
+
+        foreach ($model::openAPITypes() as $name => $type) {
+            $value = $model->offsetGet($name);
+
+            if ($value === null) {
+                continue;
+            }
+
+            if (strpos($type, '\SplFileObject') !== false) {
+                $file = is_array($value) ? $value : [$value];
+                $result[$name] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($value instanceof ModelInterface) {
+                $result[$name] = $this->processModel($value);
+
+                continue;
+            }
+
+            if (is_array($value) || is_object($value)) {
+                $result[$name] = $this->makeFormSafe($value);
+
+                continue;
+            }
+
+            $result[$name] = ObjectSerializer::toString($value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Handle file data
+     */
+    protected function processFiles(array $files): array
+    {
+        $this->has_file = true;
+
+        $result = [];
+
+        foreach ($files as $i => $file) {
+            if (is_array($file)) {
+                $result[$i] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($file instanceof StreamInterface) {
+                $result[$i] = $file;
+
+                continue;
+            }
+
+            if ($file instanceof SplFileObject) {
+                $result[$i] = $this->tryFopen($file);
+            }
+        }
+
+        return $result;
+    }
+
+    private function tryFopen(SplFileObject $file)
+    {
+        return Utils::tryFopen($file->getRealPath(), 'rb');
+    }
+}
diff --git a/src/clients/insight/lib/HeaderSelector.php b/src/clients/insight/lib/HeaderSelector.php
index a4c2985b..7b2e1348 100644
--- a/src/clients/insight/lib/HeaderSelector.php
+++ b/src/clients/insight/lib/HeaderSelector.php
@@ -16,7 +16,7 @@
  */
 /**
  * HeaderSelector
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/AgeTile.php b/src/clients/insight/lib/Model/AgeTile.php
index f2980910..b6df29ed 100644
--- a/src/clients/insight/lib/Model/AgeTile.php
+++ b/src/clients/insight/lib/Model/AgeTile.php
@@ -17,7 +17,7 @@
 /**
  * AgeTile
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/AppTypeTile.php b/src/clients/insight/lib/Model/AppTypeTile.php
index ba1a5991..ed7bfb8c 100644
--- a/src/clients/insight/lib/Model/AppTypeTile.php
+++ b/src/clients/insight/lib/Model/AppTypeTile.php
@@ -17,7 +17,7 @@
 /**
  * AppTypeTile
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/AreaTile.php b/src/clients/insight/lib/Model/AreaTile.php
index e7eb7062..83b772e0 100644
--- a/src/clients/insight/lib/Model/AreaTile.php
+++ b/src/clients/insight/lib/Model/AreaTile.php
@@ -17,7 +17,7 @@
 /**
  * AreaTile
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/ErrorDetail.php b/src/clients/insight/lib/Model/ErrorDetail.php
index aae43338..ead98667 100644
--- a/src/clients/insight/lib/Model/ErrorDetail.php
+++ b/src/clients/insight/lib/Model/ErrorDetail.php
@@ -17,7 +17,7 @@
 /**
  * ErrorDetail
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/ErrorResponse.php b/src/clients/insight/lib/Model/ErrorResponse.php
index 426ae7a0..672ac25c 100644
--- a/src/clients/insight/lib/Model/ErrorResponse.php
+++ b/src/clients/insight/lib/Model/ErrorResponse.php
@@ -17,7 +17,7 @@
 /**
  * ErrorResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GenderTile.php b/src/clients/insight/lib/Model/GenderTile.php
index 551db4c3..b530dde2 100644
--- a/src/clients/insight/lib/Model/GenderTile.php
+++ b/src/clients/insight/lib/Model/GenderTile.php
@@ -17,7 +17,7 @@
 /**
  * GenderTile
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetFriendsDemographicsResponse.php b/src/clients/insight/lib/Model/GetFriendsDemographicsResponse.php
index 6e4382b0..f04eee88 100644
--- a/src/clients/insight/lib/Model/GetFriendsDemographicsResponse.php
+++ b/src/clients/insight/lib/Model/GetFriendsDemographicsResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetFriendsDemographicsResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetMessageEventResponse.php b/src/clients/insight/lib/Model/GetMessageEventResponse.php
index 21d7fae3..2074a351 100644
--- a/src/clients/insight/lib/Model/GetMessageEventResponse.php
+++ b/src/clients/insight/lib/Model/GetMessageEventResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetMessageEventResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetMessageEventResponseClick.php b/src/clients/insight/lib/Model/GetMessageEventResponseClick.php
index 37083e61..78022b76 100644
--- a/src/clients/insight/lib/Model/GetMessageEventResponseClick.php
+++ b/src/clients/insight/lib/Model/GetMessageEventResponseClick.php
@@ -17,7 +17,7 @@
 /**
  * GetMessageEventResponseClick
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetMessageEventResponseMessage.php b/src/clients/insight/lib/Model/GetMessageEventResponseMessage.php
index d254c1be..0b499c10 100644
--- a/src/clients/insight/lib/Model/GetMessageEventResponseMessage.php
+++ b/src/clients/insight/lib/Model/GetMessageEventResponseMessage.php
@@ -17,7 +17,7 @@
 /**
  * GetMessageEventResponseMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetMessageEventResponseOverview.php b/src/clients/insight/lib/Model/GetMessageEventResponseOverview.php
index b6473f7d..f3a9c488 100644
--- a/src/clients/insight/lib/Model/GetMessageEventResponseOverview.php
+++ b/src/clients/insight/lib/Model/GetMessageEventResponseOverview.php
@@ -17,7 +17,7 @@
 /**
  * GetMessageEventResponseOverview
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetNumberOfFollowersResponse.php b/src/clients/insight/lib/Model/GetNumberOfFollowersResponse.php
index e2efaf4e..eca110fd 100644
--- a/src/clients/insight/lib/Model/GetNumberOfFollowersResponse.php
+++ b/src/clients/insight/lib/Model/GetNumberOfFollowersResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetNumberOfFollowersResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetNumberOfMessageDeliveriesResponse.php b/src/clients/insight/lib/Model/GetNumberOfMessageDeliveriesResponse.php
index 3ae53160..205aa5de 100644
--- a/src/clients/insight/lib/Model/GetNumberOfMessageDeliveriesResponse.php
+++ b/src/clients/insight/lib/Model/GetNumberOfMessageDeliveriesResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetNumberOfMessageDeliveriesResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetStatisticsPerUnitResponse.php b/src/clients/insight/lib/Model/GetStatisticsPerUnitResponse.php
index 059f634d..814867dd 100644
--- a/src/clients/insight/lib/Model/GetStatisticsPerUnitResponse.php
+++ b/src/clients/insight/lib/Model/GetStatisticsPerUnitResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetStatisticsPerUnitResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseClick.php b/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseClick.php
index e79f41b2..51287c83 100644
--- a/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseClick.php
+++ b/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseClick.php
@@ -17,7 +17,7 @@
 /**
  * GetStatisticsPerUnitResponseClick
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseMessage.php b/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseMessage.php
index 55bc4f36..eb2f2b47 100644
--- a/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseMessage.php
+++ b/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseMessage.php
@@ -17,7 +17,7 @@
 /**
  * GetStatisticsPerUnitResponseMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseOverview.php b/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseOverview.php
index 36eb9670..c8387a28 100644
--- a/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseOverview.php
+++ b/src/clients/insight/lib/Model/GetStatisticsPerUnitResponseOverview.php
@@ -17,7 +17,7 @@
 /**
  * GetStatisticsPerUnitResponseOverview
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/ModelInterface.php b/src/clients/insight/lib/Model/ModelInterface.php
index b0b2468c..d3b8fe5b 100644
--- a/src/clients/insight/lib/Model/ModelInterface.php
+++ b/src/clients/insight/lib/Model/ModelInterface.php
@@ -17,7 +17,7 @@
 /**
  * ModelInterface
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight\Model
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/Model/SubscriptionPeriodTile.php b/src/clients/insight/lib/Model/SubscriptionPeriodTile.php
index 0e92da6d..2c01f10a 100644
--- a/src/clients/insight/lib/Model/SubscriptionPeriodTile.php
+++ b/src/clients/insight/lib/Model/SubscriptionPeriodTile.php
@@ -17,7 +17,7 @@
 /**
  * SubscriptionPeriodTile
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Insight
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/insight/lib/ObjectSerializer.php b/src/clients/insight/lib/ObjectSerializer.php
index e31e99c4..61059cb7 100644
--- a/src/clients/insight/lib/ObjectSerializer.php
+++ b/src/clients/insight/lib/ObjectSerializer.php
@@ -32,9 +32,8 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
-
 /**
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
  * https://openapi-generator.tech
diff --git a/src/clients/liff/lib/Api/LiffApi.php b/src/clients/liff/lib/Api/LiffApi.php
index af45f2eb..eafd4833 100644
--- a/src/clients/liff/lib/Api/LiffApi.php
+++ b/src/clients/liff/lib/Api/LiffApi.php
@@ -16,7 +16,7 @@
  */
 /**
  * LiffApi
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -49,8 +49,11 @@
 use GuzzleHttp\Psr7\MultipartStream;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 use LINE\Clients\Liff\ApiException;
 use LINE\Clients\Liff\Configuration;
+use LINE\Clients\Liff\FormDataProcessor;
 use LINE\Clients\Liff\HeaderSelector;
 use LINE\Clients\Liff\ObjectSerializer;
 
@@ -205,34 +208,15 @@ public function addLIFFAppWithHttpInfo($addLiffAppRequest, string $contentType =
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\Liff\Model\AddLiffAppResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\Liff\Model\AddLiffAppResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\Liff\Model\AddLiffAppResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\Liff\Model\AddLiffAppResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -246,34 +230,11 @@ public function addLIFFAppWithHttpInfo($addLiffAppRequest, string $contentType =
                 );
             }
 
-            $returnType = '\LINE\Clients\Liff\Model\AddLiffAppResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\Liff\Model\AddLiffAppResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -283,8 +244,10 @@ public function addLIFFAppWithHttpInfo($addLiffAppRequest, string $contentType =
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -514,10 +477,11 @@ public function deleteLIFFAppWithHttpInfo($liffId, string $contentType = self::c
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -735,34 +699,15 @@ public function getAllLIFFAppsWithHttpInfo(string $contentType = self::contentTy
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\Liff\Model\GetAllLiffAppsResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\Liff\Model\GetAllLiffAppsResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\Liff\Model\GetAllLiffAppsResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\Liff\Model\GetAllLiffAppsResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -776,34 +721,11 @@ public function getAllLIFFAppsWithHttpInfo(string $contentType = self::contentTy
                 );
             }
 
-            $returnType = '\LINE\Clients\Liff\Model\GetAllLiffAppsResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\Liff\Model\GetAllLiffAppsResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -813,8 +735,10 @@ public function getAllLIFFAppsWithHttpInfo(string $contentType = self::contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1029,10 +953,11 @@ public function updateLIFFAppWithHttpInfo($liffId, $updateLiffAppRequest, string
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -1226,6 +1151,57 @@ protected function createHttpClientOption()
             }
         }
 
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
         return $options;
     }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
 }
diff --git a/src/clients/liff/lib/ApiException.php b/src/clients/liff/lib/ApiException.php
index f1e0cdac..b4701e98 100644
--- a/src/clients/liff/lib/ApiException.php
+++ b/src/clients/liff/lib/ApiException.php
@@ -16,7 +16,7 @@
  */
 /**
  * ApiException
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Configuration.php b/src/clients/liff/lib/Configuration.php
index bf44dfe1..5ec71152 100644
--- a/src/clients/liff/lib/Configuration.php
+++ b/src/clients/liff/lib/Configuration.php
@@ -16,7 +16,7 @@
  */
 /**
  * Configuration
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -44,7 +44,7 @@
 
 /**
  * Configuration Class Doc Comment
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -138,6 +138,20 @@ class Configuration
      */
     protected $tempFolderPath;
 
+    /**
+     * Path to a certificate file, for mTLS
+     *
+     * @var string
+     */
+    protected $certFile;
+
+    /**
+     * Path to a key file, for mTLS
+     *
+     * @var string
+     */
+    protected $keyFile;
+
     /**
      * Constructor
      */
@@ -411,6 +425,49 @@ public function getTempFolderPath()
         return $this->tempFolderPath;
     }
 
+    /**
+     * Sets the certificate file path, for mTLS
+     *
+     * @return $this
+     */
+     public function setCertFile($certFile)
+     {
+        $this->certFile = $certFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate file path, for mTLS
+     *
+     * @return string Certificate file path
+     */
+    public function getCertFile()
+    {
+        return $this->certFile;
+    }
+
+    /**
+     * Sets the certificate key path, for mTLS
+     *
+     * @return $this
+     */
+     public function setKeyFile($keyFile)
+     {
+        $this->keyFile = $keyFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate key path, for mTLS
+     *
+     * @return string Certificate key path
+     */
+    public function getKeyFile()
+    {
+        return $this->keyFile;
+    }
+    
+
     /**
      * Gets the default configuration instance
      *
diff --git a/src/clients/liff/lib/FormDataProcessor.php b/src/clients/liff/lib/FormDataProcessor.php
new file mode 100644
index 00000000..e93c993c
--- /dev/null
+++ b/src/clients/liff/lib/FormDataProcessor.php
@@ -0,0 +1,261 @@
+<?php
+/**
+ * Copyright 2026 LINE Corporation
+ *
+ * LINE Corporation licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+/**
+ * FormDataProcessor
+ * PHP version 7.4
+ *
+ * @category Class
+ * @package  LINE\Clients\Liff
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+
+/**
+ * LIFF server API
+ *
+ * LIFF Server API.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://openapi-generator.tech
+ * Generator version: 7.21.0
+ */
+
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+namespace LINE\Clients\Liff;
+
+use ArrayAccess;
+use DateTime;
+use GuzzleHttp\Psr7\Utils;
+use Psr\Http\Message\StreamInterface;
+use SplFileObject;
+use LINE\Clients\Liff\Model\ModelInterface;
+
+/**
+ * FormDataProcessor Class Doc Comment
+ *
+ * @category Class
+ * @package  LINE\Clients\Liff
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+class FormDataProcessor
+{
+    /**
+     * Tags whether payload passed to ::prepare() contains one or more
+     * SplFileObject or stream values.
+     */
+    public bool $has_file = false;
+
+    /**
+     * Take value and turn it into an array suitable for inclusion in
+     * the http body (form parameter). If it's a string, pass through unchanged
+     * If it's a datetime object, format it in ISO8601
+     *
+     * @param array<string|bool|array|DateTime|ArrayAccess|SplFileObject> $values the value of the form parameter
+     *
+     * @return array [key => value] of formdata
+     */
+    public function prepare(array $values): array
+    {
+        $this->has_file = false;
+        $result = [];
+
+        foreach ($values as $k => $v) {
+            if ($v === null) {
+                continue;
+            }
+
+            $result[$k] = $this->makeFormSafe($v);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Flattens a multi-level array of data and generates a single-level array
+     * compatible with formdata - a single-level array where the keys use bracket
+     * notation to signify nested data.
+     *
+     * credit: https://github.com/FranBar1966/FlatPHP
+     */
+    public static function flatten(array $source, string $start = ''): array
+    {
+        $opt = [
+            'prefix'          => '[',
+            'suffix'          => ']',
+            'suffix-end'      => true,
+            'prefix-list'     => '[',
+            'suffix-list'     => ']',
+            'suffix-list-end' => true,
+        ];
+
+        if ($start === '') {
+            $currentPrefix    = '';
+            $currentSuffix    = '';
+            $currentSuffixEnd = false;
+        } elseif (array_is_list($source)) {
+            $currentPrefix    = $opt['prefix-list'];
+            $currentSuffix    = $opt['suffix-list'];
+            $currentSuffixEnd = $opt['suffix-list-end'];
+        } else {
+            $currentPrefix    = $opt['prefix'];
+            $currentSuffix    = $opt['suffix'];
+            $currentSuffixEnd = $opt['suffix-end'];
+        }
+
+        $currentName = $start;
+        $result = [];
+
+        foreach ($source as $key => $val) {
+            $currentName .= $currentPrefix.$key;
+
+            if (is_array($val) && !empty($val)) {
+                $currentName .= $currentSuffix;
+                $result += self::flatten($val, $currentName);
+            } else {
+                if ($currentSuffixEnd) {
+                    $currentName .= $currentSuffix;
+                }
+
+                if (is_resource($val)) {
+                    $result[$currentName] = $val;
+                } else {
+                    $result[$currentName] = ObjectSerializer::toString($val);
+                }
+            }
+
+            $currentName = $start;
+        }
+
+        return $result;
+    }
+
+    /**
+     * formdata must be limited to scalars or arrays of scalar values,
+     * or a resource for a file upload. Here we iterate through all available
+     * data and identify how to handle each scenario
+     */
+    protected function makeFormSafe($value)
+    {
+        if ($value instanceof SplFileObject) {
+            return $this->processFiles([$value])[0];
+        }
+
+        if (is_resource($value)) {
+            $this->has_file = true;
+
+            return $value;
+        }
+
+        if ($value instanceof ModelInterface) {
+            return $this->processModel($value);
+        }
+
+        if (is_array($value) || (is_object($value) && !$value instanceof \DateTimeInterface)) {
+            $data = [];
+
+            foreach ($value as $k => $v) {
+                $data[$k] = $this->makeFormSafe($v);
+            }
+
+            return $data;
+        }
+
+        return ObjectSerializer::toString($value);
+    }
+
+    /**
+     * We are able to handle nested ModelInterface. We do not simply call
+     * json_decode(json_encode()) because any given model may have binary data
+     * or other data that cannot be serialized to a JSON string
+     */
+    protected function processModel(ModelInterface $model): array
+    {
+        $result = [];
+
+        foreach ($model::openAPITypes() as $name => $type) {
+            $value = $model->offsetGet($name);
+
+            if ($value === null) {
+                continue;
+            }
+
+            if (strpos($type, '\SplFileObject') !== false) {
+                $file = is_array($value) ? $value : [$value];
+                $result[$name] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($value instanceof ModelInterface) {
+                $result[$name] = $this->processModel($value);
+
+                continue;
+            }
+
+            if (is_array($value) || is_object($value)) {
+                $result[$name] = $this->makeFormSafe($value);
+
+                continue;
+            }
+
+            $result[$name] = ObjectSerializer::toString($value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Handle file data
+     */
+    protected function processFiles(array $files): array
+    {
+        $this->has_file = true;
+
+        $result = [];
+
+        foreach ($files as $i => $file) {
+            if (is_array($file)) {
+                $result[$i] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($file instanceof StreamInterface) {
+                $result[$i] = $file;
+
+                continue;
+            }
+
+            if ($file instanceof SplFileObject) {
+                $result[$i] = $this->tryFopen($file);
+            }
+        }
+
+        return $result;
+    }
+
+    private function tryFopen(SplFileObject $file)
+    {
+        return Utils::tryFopen($file->getRealPath(), 'rb');
+    }
+}
diff --git a/src/clients/liff/lib/HeaderSelector.php b/src/clients/liff/lib/HeaderSelector.php
index 9e4abc40..9c910a9a 100644
--- a/src/clients/liff/lib/HeaderSelector.php
+++ b/src/clients/liff/lib/HeaderSelector.php
@@ -16,7 +16,7 @@
  */
 /**
  * HeaderSelector
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/AddLiffAppRequest.php b/src/clients/liff/lib/Model/AddLiffAppRequest.php
index 6c143970..51b57711 100644
--- a/src/clients/liff/lib/Model/AddLiffAppRequest.php
+++ b/src/clients/liff/lib/Model/AddLiffAppRequest.php
@@ -17,7 +17,7 @@
 /**
  * AddLiffAppRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/AddLiffAppResponse.php b/src/clients/liff/lib/Model/AddLiffAppResponse.php
index 6bc7d4d8..1194f869 100644
--- a/src/clients/liff/lib/Model/AddLiffAppResponse.php
+++ b/src/clients/liff/lib/Model/AddLiffAppResponse.php
@@ -17,7 +17,7 @@
 /**
  * AddLiffAppResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/GetAllLiffAppsResponse.php b/src/clients/liff/lib/Model/GetAllLiffAppsResponse.php
index 03078438..65b3be27 100644
--- a/src/clients/liff/lib/Model/GetAllLiffAppsResponse.php
+++ b/src/clients/liff/lib/Model/GetAllLiffAppsResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetAllLiffAppsResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/LiffApp.php b/src/clients/liff/lib/Model/LiffApp.php
index 5dd0f9df..7a8dcd24 100644
--- a/src/clients/liff/lib/Model/LiffApp.php
+++ b/src/clients/liff/lib/Model/LiffApp.php
@@ -17,7 +17,7 @@
 /**
  * LiffApp
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/LiffBotPrompt.php b/src/clients/liff/lib/Model/LiffBotPrompt.php
index dcdcb18b..c39102d7 100644
--- a/src/clients/liff/lib/Model/LiffBotPrompt.php
+++ b/src/clients/liff/lib/Model/LiffBotPrompt.php
@@ -17,7 +17,7 @@
 /**
  * LiffBotPrompt
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/LiffFeatures.php b/src/clients/liff/lib/Model/LiffFeatures.php
index f9e74dc8..0dd0a18e 100644
--- a/src/clients/liff/lib/Model/LiffFeatures.php
+++ b/src/clients/liff/lib/Model/LiffFeatures.php
@@ -17,7 +17,7 @@
 /**
  * LiffFeatures
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/LiffScope.php b/src/clients/liff/lib/Model/LiffScope.php
index 8a6799d3..a4acee50 100644
--- a/src/clients/liff/lib/Model/LiffScope.php
+++ b/src/clients/liff/lib/Model/LiffScope.php
@@ -17,7 +17,7 @@
 /**
  * LiffScope
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/LiffView.php b/src/clients/liff/lib/Model/LiffView.php
index c6e75fb1..c002c71e 100644
--- a/src/clients/liff/lib/Model/LiffView.php
+++ b/src/clients/liff/lib/Model/LiffView.php
@@ -17,7 +17,7 @@
 /**
  * LiffView
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/ModelInterface.php b/src/clients/liff/lib/Model/ModelInterface.php
index 169cc893..6d8e24b7 100644
--- a/src/clients/liff/lib/Model/ModelInterface.php
+++ b/src/clients/liff/lib/Model/ModelInterface.php
@@ -17,7 +17,7 @@
 /**
  * ModelInterface
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff\Model
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/UpdateLiffAppRequest.php b/src/clients/liff/lib/Model/UpdateLiffAppRequest.php
index 13ce1972..23888d45 100644
--- a/src/clients/liff/lib/Model/UpdateLiffAppRequest.php
+++ b/src/clients/liff/lib/Model/UpdateLiffAppRequest.php
@@ -17,7 +17,7 @@
 /**
  * UpdateLiffAppRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/Model/UpdateLiffView.php b/src/clients/liff/lib/Model/UpdateLiffView.php
index 874e7230..30b8bcd7 100644
--- a/src/clients/liff/lib/Model/UpdateLiffView.php
+++ b/src/clients/liff/lib/Model/UpdateLiffView.php
@@ -17,7 +17,7 @@
 /**
  * UpdateLiffView
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\Liff
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/liff/lib/ObjectSerializer.php b/src/clients/liff/lib/ObjectSerializer.php
index 0e934be7..a9723523 100644
--- a/src/clients/liff/lib/ObjectSerializer.php
+++ b/src/clients/liff/lib/ObjectSerializer.php
@@ -32,9 +32,8 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
-
 /**
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
  * https://openapi-generator.tech
diff --git a/src/clients/manage-audience/lib/Api/ManageAudienceApi.php b/src/clients/manage-audience/lib/Api/ManageAudienceApi.php
index 0997ab58..74e5a126 100644
--- a/src/clients/manage-audience/lib/Api/ManageAudienceApi.php
+++ b/src/clients/manage-audience/lib/Api/ManageAudienceApi.php
@@ -16,7 +16,7 @@
  */
 /**
  * ManageAudienceApi
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -49,8 +49,11 @@
 use GuzzleHttp\Psr7\MultipartStream;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 use LINE\Clients\ManageAudience\ApiException;
 use LINE\Clients\ManageAudience\Configuration;
+use LINE\Clients\ManageAudience\FormDataProcessor;
 use LINE\Clients\ManageAudience\HeaderSelector;
 use LINE\Clients\ManageAudience\ObjectSerializer;
 
@@ -217,10 +220,11 @@ public function addAudienceToAudienceGroupWithHttpInfo($addAudienceToAudienceGro
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -431,34 +435,15 @@ public function createAudienceGroupWithHttpInfo($createAudienceGroupRequest, str
 
             switch($statusCode) {
                 case 202:
-                    if ('\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -472,34 +457,11 @@ public function createAudienceGroupWithHttpInfo($createAudienceGroupRequest, str
                 );
             }
 
-            $returnType = '\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 202:
@@ -509,8 +471,10 @@ public function createAudienceGroupWithHttpInfo($createAudienceGroupRequest, str
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -734,34 +698,15 @@ public function createClickBasedAudienceGroupWithHttpInfo($createClickBasedAudie
 
             switch($statusCode) {
                 case 202:
-                    if ('\LINE\Clients\ManageAudience\Model\CreateClickBasedAudienceGroupResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\CreateClickBasedAudienceGroupResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\CreateClickBasedAudienceGroupResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\CreateClickBasedAudienceGroupResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -775,34 +720,11 @@ public function createClickBasedAudienceGroupWithHttpInfo($createClickBasedAudie
                 );
             }
 
-            $returnType = '\LINE\Clients\ManageAudience\Model\CreateClickBasedAudienceGroupResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ManageAudience\Model\CreateClickBasedAudienceGroupResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 202:
@@ -812,8 +734,10 @@ public function createClickBasedAudienceGroupWithHttpInfo($createClickBasedAudie
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1037,34 +961,15 @@ public function createImpBasedAudienceGroupWithHttpInfo($createImpBasedAudienceG
 
             switch($statusCode) {
                 case 202:
-                    if ('\LINE\Clients\ManageAudience\Model\CreateImpBasedAudienceGroupResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\CreateImpBasedAudienceGroupResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\CreateImpBasedAudienceGroupResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\CreateImpBasedAudienceGroupResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1078,34 +983,11 @@ public function createImpBasedAudienceGroupWithHttpInfo($createImpBasedAudienceG
                 );
             }
 
-            $returnType = '\LINE\Clients\ManageAudience\Model\CreateImpBasedAudienceGroupResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ManageAudience\Model\CreateImpBasedAudienceGroupResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 202:
@@ -1115,8 +997,10 @@ public function createImpBasedAudienceGroupWithHttpInfo($createImpBasedAudienceG
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1338,10 +1222,11 @@ public function deleteAudienceGroupWithHttpInfo($audienceGroupId, string $conten
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -1553,61 +1438,21 @@ public function getAudienceDataWithHttpInfo($audienceGroupId, string $contentTyp
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ManageAudience\Model\GetAudienceDataResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\GetAudienceDataResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\GetAudienceDataResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\GetAudienceDataResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\ManageAudience\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1621,34 +1466,11 @@ public function getAudienceDataWithHttpInfo($audienceGroupId, string $contentTyp
                 );
             }
 
-            $returnType = '\LINE\Clients\ManageAudience\Model\GetAudienceDataResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ManageAudience\Model\GetAudienceDataResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1658,7 +1480,7 @@ public function getAudienceDataWithHttpInfo($audienceGroupId, string $contentTyp
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -1666,8 +1488,10 @@ public function getAudienceDataWithHttpInfo($audienceGroupId, string $contentTyp
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1902,34 +1726,15 @@ public function getAudienceGroupsWithHttpInfo($page, $description = null, $statu
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ManageAudience\Model\GetAudienceGroupsResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\GetAudienceGroupsResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\GetAudienceGroupsResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\GetAudienceGroupsResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1943,34 +1748,11 @@ public function getAudienceGroupsWithHttpInfo($page, $description = null, $statu
                 );
             }
 
-            $returnType = '\LINE\Clients\ManageAudience\Model\GetAudienceGroupsResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ManageAudience\Model\GetAudienceGroupsResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1980,8 +1762,10 @@ public function getAudienceGroupsWithHttpInfo($page, $description = null, $statu
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -2278,61 +2062,21 @@ public function getSharedAudienceDataWithHttpInfo($audienceGroupId, string $cont
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ManageAudience\Model\GetSharedAudienceDataResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\GetSharedAudienceDataResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\GetSharedAudienceDataResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\GetSharedAudienceDataResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\ManageAudience\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -2346,34 +2090,11 @@ public function getSharedAudienceDataWithHttpInfo($audienceGroupId, string $cont
                 );
             }
 
-            $returnType = '\LINE\Clients\ManageAudience\Model\GetSharedAudienceDataResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ManageAudience\Model\GetSharedAudienceDataResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -2383,7 +2104,7 @@ public function getSharedAudienceDataWithHttpInfo($audienceGroupId, string $cont
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -2391,8 +2112,10 @@ public function getSharedAudienceDataWithHttpInfo($audienceGroupId, string $cont
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -2627,34 +2350,15 @@ public function getSharedAudienceGroupsWithHttpInfo($page, $description = null,
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\ManageAudience\Model\GetSharedAudienceGroupsResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\GetSharedAudienceGroupsResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\GetSharedAudienceGroupsResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\GetSharedAudienceGroupsResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -2668,34 +2372,11 @@ public function getSharedAudienceGroupsWithHttpInfo($page, $description = null,
                 );
             }
 
-            $returnType = '\LINE\Clients\ManageAudience\Model\GetSharedAudienceGroupsResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ManageAudience\Model\GetSharedAudienceGroupsResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -2705,8 +2386,10 @@ public function getSharedAudienceGroupsWithHttpInfo($page, $description = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -3003,10 +2686,11 @@ public function updateAudienceGroupDescriptionWithHttpInfo($audienceGroupId, $up
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -3196,6 +2880,57 @@ protected function createHttpClientOption()
             }
         }
 
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
         return $options;
     }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
 }
diff --git a/src/clients/manage-audience/lib/Api/ManageAudienceBlobApi.php b/src/clients/manage-audience/lib/Api/ManageAudienceBlobApi.php
index eb61999c..b547acdc 100644
--- a/src/clients/manage-audience/lib/Api/ManageAudienceBlobApi.php
+++ b/src/clients/manage-audience/lib/Api/ManageAudienceBlobApi.php
@@ -16,7 +16,7 @@
  */
 /**
  * ManageAudienceBlobApi
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -49,8 +49,11 @@
 use GuzzleHttp\Psr7\MultipartStream;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 use LINE\Clients\ManageAudience\ApiException;
 use LINE\Clients\ManageAudience\Configuration;
+use LINE\Clients\ManageAudience\FormDataProcessor;
 use LINE\Clients\ManageAudience\HeaderSelector;
 use LINE\Clients\ManageAudience\ObjectSerializer;
 
@@ -209,10 +212,11 @@ public function addUserIdsToAudienceWithHttpInfo($file, $audienceGroupId = null,
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -330,25 +334,16 @@ public function addUserIdsToAudienceRequest($file, $audienceGroupId = null, $upl
 
 
         // form params
-        if ($audienceGroupId !== null) {
-            $formParams['audienceGroupId'] = ObjectSerializer::toFormValue($audienceGroupId);
-        }
-        // form params
-        if ($uploadDescription !== null) {
-            $formParams['uploadDescription'] = ObjectSerializer::toFormValue($uploadDescription);
-        }
-        // form params
-        if ($file !== null) {
-            $multipart = true;
-            $formParams['file'] = [];
-            $paramFiles = is_array($file) ? $file : [$file];
-            foreach ($paramFiles as $paramFile) {
-                $formParams['file'][] = \GuzzleHttp\Psr7\Utils::tryFopen(
-                    ObjectSerializer::toFormValue($paramFile),
-                    'rb'
-                );
-            }
-        }
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+            'audienceGroupId' => $audienceGroupId,
+            'uploadDescription' => $uploadDescription,
+            'file' => $file,
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
 
         $multipart = true;
         $headers = $this->headerSelector->selectHeaders(
@@ -506,34 +501,15 @@ public function createAudienceForUploadingUserIdsWithHttpInfo($file, $descriptio
 
             switch($statusCode) {
                 case 202:
-                    if ('\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -547,34 +523,11 @@ public function createAudienceForUploadingUserIdsWithHttpInfo($file, $descriptio
                 );
             }
 
-            $returnType = '\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\ManageAudience\Model\CreateAudienceGroupResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 202:
@@ -584,8 +537,10 @@ public function createAudienceForUploadingUserIdsWithHttpInfo($file, $descriptio
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -723,29 +678,17 @@ public function createAudienceForUploadingUserIdsRequest($file, $description = n
 
 
         // form params
-        if ($description !== null) {
-            $formParams['description'] = ObjectSerializer::toFormValue($description);
-        }
-        // form params
-        if ($isIfaAudience !== null) {
-            $formParams['isIfaAudience'] = ObjectSerializer::toFormValue($isIfaAudience);
-        }
-        // form params
-        if ($uploadDescription !== null) {
-            $formParams['uploadDescription'] = ObjectSerializer::toFormValue($uploadDescription);
-        }
-        // form params
-        if ($file !== null) {
-            $multipart = true;
-            $formParams['file'] = [];
-            $paramFiles = is_array($file) ? $file : [$file];
-            foreach ($paramFiles as $paramFile) {
-                $formParams['file'][] = \GuzzleHttp\Psr7\Utils::tryFopen(
-                    ObjectSerializer::toFormValue($paramFile),
-                    'rb'
-                );
-            }
-        }
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+            'description' => $description,
+            'isIfaAudience' => $isIfaAudience,
+            'uploadDescription' => $uploadDescription,
+            'file' => $file,
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
 
         $multipart = true;
         $headers = $this->headerSelector->selectHeaders(
@@ -846,6 +789,57 @@ protected function createHttpClientOption()
             }
         }
 
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
         return $options;
     }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
 }
diff --git a/src/clients/manage-audience/lib/ApiException.php b/src/clients/manage-audience/lib/ApiException.php
index eba67b16..15f8b6c7 100644
--- a/src/clients/manage-audience/lib/ApiException.php
+++ b/src/clients/manage-audience/lib/ApiException.php
@@ -16,7 +16,7 @@
  */
 /**
  * ApiException
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Configuration.php b/src/clients/manage-audience/lib/Configuration.php
index 519420d5..95c1d388 100644
--- a/src/clients/manage-audience/lib/Configuration.php
+++ b/src/clients/manage-audience/lib/Configuration.php
@@ -16,7 +16,7 @@
  */
 /**
  * Configuration
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -44,7 +44,7 @@
 
 /**
  * Configuration Class Doc Comment
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -138,6 +138,20 @@ class Configuration
      */
     protected $tempFolderPath;
 
+    /**
+     * Path to a certificate file, for mTLS
+     *
+     * @var string
+     */
+    protected $certFile;
+
+    /**
+     * Path to a key file, for mTLS
+     *
+     * @var string
+     */
+    protected $keyFile;
+
     /**
      * Constructor
      */
@@ -411,6 +425,49 @@ public function getTempFolderPath()
         return $this->tempFolderPath;
     }
 
+    /**
+     * Sets the certificate file path, for mTLS
+     *
+     * @return $this
+     */
+     public function setCertFile($certFile)
+     {
+        $this->certFile = $certFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate file path, for mTLS
+     *
+     * @return string Certificate file path
+     */
+    public function getCertFile()
+    {
+        return $this->certFile;
+    }
+
+    /**
+     * Sets the certificate key path, for mTLS
+     *
+     * @return $this
+     */
+     public function setKeyFile($keyFile)
+     {
+        $this->keyFile = $keyFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate key path, for mTLS
+     *
+     * @return string Certificate key path
+     */
+    public function getKeyFile()
+    {
+        return $this->keyFile;
+    }
+    
+
     /**
      * Gets the default configuration instance
      *
diff --git a/src/clients/manage-audience/lib/FormDataProcessor.php b/src/clients/manage-audience/lib/FormDataProcessor.php
new file mode 100644
index 00000000..10a2a304
--- /dev/null
+++ b/src/clients/manage-audience/lib/FormDataProcessor.php
@@ -0,0 +1,261 @@
+<?php
+/**
+ * Copyright 2026 LINE Corporation
+ *
+ * LINE Corporation licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+/**
+ * FormDataProcessor
+ * PHP version 7.4
+ *
+ * @category Class
+ * @package  LINE\Clients\ManageAudience
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+
+/**
+ * LINE Messaging API
+ *
+ * This document describes LINE Messaging API.
+ *
+ * The version of the OpenAPI document: 0.0.1
+ * Generated by: https://openapi-generator.tech
+ * Generator version: 7.21.0
+ */
+
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+namespace LINE\Clients\ManageAudience;
+
+use ArrayAccess;
+use DateTime;
+use GuzzleHttp\Psr7\Utils;
+use Psr\Http\Message\StreamInterface;
+use SplFileObject;
+use LINE\Clients\ManageAudience\Model\ModelInterface;
+
+/**
+ * FormDataProcessor Class Doc Comment
+ *
+ * @category Class
+ * @package  LINE\Clients\ManageAudience
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+class FormDataProcessor
+{
+    /**
+     * Tags whether payload passed to ::prepare() contains one or more
+     * SplFileObject or stream values.
+     */
+    public bool $has_file = false;
+
+    /**
+     * Take value and turn it into an array suitable for inclusion in
+     * the http body (form parameter). If it's a string, pass through unchanged
+     * If it's a datetime object, format it in ISO8601
+     *
+     * @param array<string|bool|array|DateTime|ArrayAccess|SplFileObject> $values the value of the form parameter
+     *
+     * @return array [key => value] of formdata
+     */
+    public function prepare(array $values): array
+    {
+        $this->has_file = false;
+        $result = [];
+
+        foreach ($values as $k => $v) {
+            if ($v === null) {
+                continue;
+            }
+
+            $result[$k] = $this->makeFormSafe($v);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Flattens a multi-level array of data and generates a single-level array
+     * compatible with formdata - a single-level array where the keys use bracket
+     * notation to signify nested data.
+     *
+     * credit: https://github.com/FranBar1966/FlatPHP
+     */
+    public static function flatten(array $source, string $start = ''): array
+    {
+        $opt = [
+            'prefix'          => '[',
+            'suffix'          => ']',
+            'suffix-end'      => true,
+            'prefix-list'     => '[',
+            'suffix-list'     => ']',
+            'suffix-list-end' => true,
+        ];
+
+        if ($start === '') {
+            $currentPrefix    = '';
+            $currentSuffix    = '';
+            $currentSuffixEnd = false;
+        } elseif (array_is_list($source)) {
+            $currentPrefix    = $opt['prefix-list'];
+            $currentSuffix    = $opt['suffix-list'];
+            $currentSuffixEnd = $opt['suffix-list-end'];
+        } else {
+            $currentPrefix    = $opt['prefix'];
+            $currentSuffix    = $opt['suffix'];
+            $currentSuffixEnd = $opt['suffix-end'];
+        }
+
+        $currentName = $start;
+        $result = [];
+
+        foreach ($source as $key => $val) {
+            $currentName .= $currentPrefix.$key;
+
+            if (is_array($val) && !empty($val)) {
+                $currentName .= $currentSuffix;
+                $result += self::flatten($val, $currentName);
+            } else {
+                if ($currentSuffixEnd) {
+                    $currentName .= $currentSuffix;
+                }
+
+                if (is_resource($val)) {
+                    $result[$currentName] = $val;
+                } else {
+                    $result[$currentName] = ObjectSerializer::toString($val);
+                }
+            }
+
+            $currentName = $start;
+        }
+
+        return $result;
+    }
+
+    /**
+     * formdata must be limited to scalars or arrays of scalar values,
+     * or a resource for a file upload. Here we iterate through all available
+     * data and identify how to handle each scenario
+     */
+    protected function makeFormSafe($value)
+    {
+        if ($value instanceof SplFileObject) {
+            return $this->processFiles([$value])[0];
+        }
+
+        if (is_resource($value)) {
+            $this->has_file = true;
+
+            return $value;
+        }
+
+        if ($value instanceof ModelInterface) {
+            return $this->processModel($value);
+        }
+
+        if (is_array($value) || (is_object($value) && !$value instanceof \DateTimeInterface)) {
+            $data = [];
+
+            foreach ($value as $k => $v) {
+                $data[$k] = $this->makeFormSafe($v);
+            }
+
+            return $data;
+        }
+
+        return ObjectSerializer::toString($value);
+    }
+
+    /**
+     * We are able to handle nested ModelInterface. We do not simply call
+     * json_decode(json_encode()) because any given model may have binary data
+     * or other data that cannot be serialized to a JSON string
+     */
+    protected function processModel(ModelInterface $model): array
+    {
+        $result = [];
+
+        foreach ($model::openAPITypes() as $name => $type) {
+            $value = $model->offsetGet($name);
+
+            if ($value === null) {
+                continue;
+            }
+
+            if (strpos($type, '\SplFileObject') !== false) {
+                $file = is_array($value) ? $value : [$value];
+                $result[$name] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($value instanceof ModelInterface) {
+                $result[$name] = $this->processModel($value);
+
+                continue;
+            }
+
+            if (is_array($value) || is_object($value)) {
+                $result[$name] = $this->makeFormSafe($value);
+
+                continue;
+            }
+
+            $result[$name] = ObjectSerializer::toString($value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Handle file data
+     */
+    protected function processFiles(array $files): array
+    {
+        $this->has_file = true;
+
+        $result = [];
+
+        foreach ($files as $i => $file) {
+            if (is_array($file)) {
+                $result[$i] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($file instanceof StreamInterface) {
+                $result[$i] = $file;
+
+                continue;
+            }
+
+            if ($file instanceof SplFileObject) {
+                $result[$i] = $this->tryFopen($file);
+            }
+        }
+
+        return $result;
+    }
+
+    private function tryFopen(SplFileObject $file)
+    {
+        return Utils::tryFopen($file->getRealPath(), 'rb');
+    }
+}
diff --git a/src/clients/manage-audience/lib/HeaderSelector.php b/src/clients/manage-audience/lib/HeaderSelector.php
index e299e2a3..bbe3d3fc 100644
--- a/src/clients/manage-audience/lib/HeaderSelector.php
+++ b/src/clients/manage-audience/lib/HeaderSelector.php
@@ -16,7 +16,7 @@
  */
 /**
  * HeaderSelector
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/Adaccount.php b/src/clients/manage-audience/lib/Model/Adaccount.php
index 09d91eef..a48a72ce 100644
--- a/src/clients/manage-audience/lib/Model/Adaccount.php
+++ b/src/clients/manage-audience/lib/Model/Adaccount.php
@@ -17,7 +17,7 @@
 /**
  * Adaccount
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AddAudienceToAudienceGroupRequest.php b/src/clients/manage-audience/lib/Model/AddAudienceToAudienceGroupRequest.php
index c39159e7..3f9bfbfa 100644
--- a/src/clients/manage-audience/lib/Model/AddAudienceToAudienceGroupRequest.php
+++ b/src/clients/manage-audience/lib/Model/AddAudienceToAudienceGroupRequest.php
@@ -17,7 +17,7 @@
 /**
  * AddAudienceToAudienceGroupRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/Audience.php b/src/clients/manage-audience/lib/Model/Audience.php
index 77a1be29..398ef244 100644
--- a/src/clients/manage-audience/lib/Model/Audience.php
+++ b/src/clients/manage-audience/lib/Model/Audience.php
@@ -17,7 +17,7 @@
 /**
  * Audience
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroup.php b/src/clients/manage-audience/lib/Model/AudienceGroup.php
index b99e944a..c3f97c1a 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroup.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroup.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroup
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupCreateRoute.php b/src/clients/manage-audience/lib/Model/AudienceGroupCreateRoute.php
index bec2088e..c9de3238 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupCreateRoute.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupCreateRoute.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupCreateRoute
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupFailedType.php b/src/clients/manage-audience/lib/Model/AudienceGroupFailedType.php
index 5f43e2a5..ebbde65b 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupFailedType.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupFailedType.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupFailedType
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupJob.php b/src/clients/manage-audience/lib/Model/AudienceGroupJob.php
index 038f0964..bd436c68 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupJob.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupJob.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupJob
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupJobFailedType.php b/src/clients/manage-audience/lib/Model/AudienceGroupJobFailedType.php
index 5d7d5822..ff88c0c5 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupJobFailedType.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupJobFailedType.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupJobFailedType
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupJobStatus.php b/src/clients/manage-audience/lib/Model/AudienceGroupJobStatus.php
index 7a82b691..00c77c1d 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupJobStatus.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupJobStatus.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupJobStatus
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupJobType.php b/src/clients/manage-audience/lib/Model/AudienceGroupJobType.php
index 5e8dd989..68be7980 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupJobType.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupJobType.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupJobType
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupPermission.php b/src/clients/manage-audience/lib/Model/AudienceGroupPermission.php
index 1a194971..be4145cd 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupPermission.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupPermission.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupPermission
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupStatus.php b/src/clients/manage-audience/lib/Model/AudienceGroupStatus.php
index 06442dba..2034a7ba 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupStatus.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupStatus.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupStatus
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/AudienceGroupType.php b/src/clients/manage-audience/lib/Model/AudienceGroupType.php
index c890098c..c47b3c52 100644
--- a/src/clients/manage-audience/lib/Model/AudienceGroupType.php
+++ b/src/clients/manage-audience/lib/Model/AudienceGroupType.php
@@ -17,7 +17,7 @@
 /**
  * AudienceGroupType
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/CreateAudienceGroupRequest.php b/src/clients/manage-audience/lib/Model/CreateAudienceGroupRequest.php
index b158ed9b..7520fe88 100644
--- a/src/clients/manage-audience/lib/Model/CreateAudienceGroupRequest.php
+++ b/src/clients/manage-audience/lib/Model/CreateAudienceGroupRequest.php
@@ -17,7 +17,7 @@
 /**
  * CreateAudienceGroupRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/CreateAudienceGroupResponse.php b/src/clients/manage-audience/lib/Model/CreateAudienceGroupResponse.php
index 51faf498..e7f6a0b2 100644
--- a/src/clients/manage-audience/lib/Model/CreateAudienceGroupResponse.php
+++ b/src/clients/manage-audience/lib/Model/CreateAudienceGroupResponse.php
@@ -17,7 +17,7 @@
 /**
  * CreateAudienceGroupResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/CreateClickBasedAudienceGroupRequest.php b/src/clients/manage-audience/lib/Model/CreateClickBasedAudienceGroupRequest.php
index cf4cc3cd..27484dd8 100644
--- a/src/clients/manage-audience/lib/Model/CreateClickBasedAudienceGroupRequest.php
+++ b/src/clients/manage-audience/lib/Model/CreateClickBasedAudienceGroupRequest.php
@@ -17,7 +17,7 @@
 /**
  * CreateClickBasedAudienceGroupRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/CreateClickBasedAudienceGroupResponse.php b/src/clients/manage-audience/lib/Model/CreateClickBasedAudienceGroupResponse.php
index 73c7bd08..a1e6c00b 100644
--- a/src/clients/manage-audience/lib/Model/CreateClickBasedAudienceGroupResponse.php
+++ b/src/clients/manage-audience/lib/Model/CreateClickBasedAudienceGroupResponse.php
@@ -17,7 +17,7 @@
 /**
  * CreateClickBasedAudienceGroupResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/CreateImpBasedAudienceGroupRequest.php b/src/clients/manage-audience/lib/Model/CreateImpBasedAudienceGroupRequest.php
index a72cdc27..95499771 100644
--- a/src/clients/manage-audience/lib/Model/CreateImpBasedAudienceGroupRequest.php
+++ b/src/clients/manage-audience/lib/Model/CreateImpBasedAudienceGroupRequest.php
@@ -17,7 +17,7 @@
 /**
  * CreateImpBasedAudienceGroupRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/CreateImpBasedAudienceGroupResponse.php b/src/clients/manage-audience/lib/Model/CreateImpBasedAudienceGroupResponse.php
index 0fdc3c7b..6646fab1 100644
--- a/src/clients/manage-audience/lib/Model/CreateImpBasedAudienceGroupResponse.php
+++ b/src/clients/manage-audience/lib/Model/CreateImpBasedAudienceGroupResponse.php
@@ -17,7 +17,7 @@
 /**
  * CreateImpBasedAudienceGroupResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/DetailedOwner.php b/src/clients/manage-audience/lib/Model/DetailedOwner.php
index a70bd6ad..c8c0ee41 100644
--- a/src/clients/manage-audience/lib/Model/DetailedOwner.php
+++ b/src/clients/manage-audience/lib/Model/DetailedOwner.php
@@ -17,7 +17,7 @@
 /**
  * DetailedOwner
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/ErrorDetail.php b/src/clients/manage-audience/lib/Model/ErrorDetail.php
index 5ef9242c..9b2dda39 100644
--- a/src/clients/manage-audience/lib/Model/ErrorDetail.php
+++ b/src/clients/manage-audience/lib/Model/ErrorDetail.php
@@ -17,7 +17,7 @@
 /**
  * ErrorDetail
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/ErrorResponse.php b/src/clients/manage-audience/lib/Model/ErrorResponse.php
index 009d8c51..03a22859 100644
--- a/src/clients/manage-audience/lib/Model/ErrorResponse.php
+++ b/src/clients/manage-audience/lib/Model/ErrorResponse.php
@@ -17,7 +17,7 @@
 /**
  * ErrorResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/GetAudienceDataResponse.php b/src/clients/manage-audience/lib/Model/GetAudienceDataResponse.php
index 64eb8040..09d12799 100644
--- a/src/clients/manage-audience/lib/Model/GetAudienceDataResponse.php
+++ b/src/clients/manage-audience/lib/Model/GetAudienceDataResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetAudienceDataResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/GetAudienceGroupsResponse.php b/src/clients/manage-audience/lib/Model/GetAudienceGroupsResponse.php
index 195d9a48..7fa3e7d9 100644
--- a/src/clients/manage-audience/lib/Model/GetAudienceGroupsResponse.php
+++ b/src/clients/manage-audience/lib/Model/GetAudienceGroupsResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetAudienceGroupsResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/GetSharedAudienceDataResponse.php b/src/clients/manage-audience/lib/Model/GetSharedAudienceDataResponse.php
index 4163a554..e479bf86 100644
--- a/src/clients/manage-audience/lib/Model/GetSharedAudienceDataResponse.php
+++ b/src/clients/manage-audience/lib/Model/GetSharedAudienceDataResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetSharedAudienceDataResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/GetSharedAudienceGroupsResponse.php b/src/clients/manage-audience/lib/Model/GetSharedAudienceGroupsResponse.php
index f3368f61..a3e9995e 100644
--- a/src/clients/manage-audience/lib/Model/GetSharedAudienceGroupsResponse.php
+++ b/src/clients/manage-audience/lib/Model/GetSharedAudienceGroupsResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetSharedAudienceGroupsResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/ModelInterface.php b/src/clients/manage-audience/lib/Model/ModelInterface.php
index e9cf2b59..3c18c391 100644
--- a/src/clients/manage-audience/lib/Model/ModelInterface.php
+++ b/src/clients/manage-audience/lib/Model/ModelInterface.php
@@ -17,7 +17,7 @@
 /**
  * ModelInterface
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience\Model
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/Model/UpdateAudienceGroupDescriptionRequest.php b/src/clients/manage-audience/lib/Model/UpdateAudienceGroupDescriptionRequest.php
index c5d4a538..7a4613f8 100644
--- a/src/clients/manage-audience/lib/Model/UpdateAudienceGroupDescriptionRequest.php
+++ b/src/clients/manage-audience/lib/Model/UpdateAudienceGroupDescriptionRequest.php
@@ -17,7 +17,7 @@
 /**
  * UpdateAudienceGroupDescriptionRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\ManageAudience
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/manage-audience/lib/ObjectSerializer.php b/src/clients/manage-audience/lib/ObjectSerializer.php
index 0071b0c4..59c6864c 100644
--- a/src/clients/manage-audience/lib/ObjectSerializer.php
+++ b/src/clients/manage-audience/lib/ObjectSerializer.php
@@ -32,9 +32,8 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
-
 /**
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
  * https://openapi-generator.tech
diff --git a/src/clients/messaging-api/lib/Api/MessagingApiApi.php b/src/clients/messaging-api/lib/Api/MessagingApiApi.php
index c91d18b8..31521bc9 100644
--- a/src/clients/messaging-api/lib/Api/MessagingApiApi.php
+++ b/src/clients/messaging-api/lib/Api/MessagingApiApi.php
@@ -16,7 +16,7 @@
  */
 /**
  * MessagingApiApi
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -49,8 +49,11 @@
 use GuzzleHttp\Psr7\MultipartStream;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 use LINE\Clients\MessagingApi\ApiException;
 use LINE\Clients\MessagingApi\Configuration;
+use LINE\Clients\MessagingApi\FormDataProcessor;
 use LINE\Clients\MessagingApi\HeaderSelector;
 use LINE\Clients\MessagingApi\ObjectSerializer;
 
@@ -395,142 +398,39 @@ public function broadcastWithHttpInfo($broadcastRequest, $xLineRetryKey = null,
 
             switch($statusCode) {
                 case 200:
-                    if ('object' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('object' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, 'object', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        'object',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 403:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 409:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 429:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -544,34 +444,11 @@ public function broadcastWithHttpInfo($broadcastRequest, $xLineRetryKey = null,
                 );
             }
 
-            $returnType = 'object';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                'object',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -581,7 +458,7 @@ public function broadcastWithHttpInfo($broadcastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -589,7 +466,7 @@ public function broadcastWithHttpInfo($broadcastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 403:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -597,7 +474,7 @@ public function broadcastWithHttpInfo($broadcastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 409:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -605,7 +482,7 @@ public function broadcastWithHttpInfo($broadcastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 429:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -613,8 +490,10 @@ public function broadcastWithHttpInfo($broadcastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -842,10 +721,11 @@ public function cancelDefaultRichMenuWithHttpInfo(string $contentType = self::co
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -1037,7 +917,6 @@ public function closeCouponWithHttpInfo($couponId, string $contentType = self::c
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 400:
@@ -1047,7 +926,7 @@ public function closeCouponWithHttpInfo($couponId, string $contentType = self::c
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 404:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -1055,7 +934,7 @@ public function closeCouponWithHttpInfo($couponId, string $contentType = self::c
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 410:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -1063,8 +942,10 @@ public function closeCouponWithHttpInfo($couponId, string $contentType = self::c
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1276,61 +1157,21 @@ public function createCouponWithHttpInfo($couponCreateRequest = null, string $co
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\CouponCreateResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\CouponCreateResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\CouponCreateResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\CouponCreateResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1344,34 +1185,11 @@ public function createCouponWithHttpInfo($couponCreateRequest = null, string $co
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\CouponCreateResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\CouponCreateResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1381,7 +1199,7 @@ public function createCouponWithHttpInfo($couponCreateRequest = null, string $co
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -1389,8 +1207,10 @@ public function createCouponWithHttpInfo($couponCreateRequest = null, string $co
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1608,34 +1428,15 @@ public function createRichMenuWithHttpInfo($richMenuRequest, string $contentType
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RichMenuIdResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RichMenuIdResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1649,34 +1450,11 @@ public function createRichMenuWithHttpInfo($richMenuRequest, string $contentType
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1686,8 +1464,10 @@ public function createRichMenuWithHttpInfo($richMenuRequest, string $contentType
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1909,7 +1689,6 @@ public function createRichMenuAliasWithHttpInfo($createRichMenuAliasRequest, str
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 400:
@@ -1919,8 +1698,10 @@ public function createRichMenuAliasWithHttpInfo($createRichMenuAliasRequest, str
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -2129,10 +1910,11 @@ public function deleteRichMenuWithHttpInfo($richMenuId, string $contentType = se
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -2342,7 +2124,6 @@ public function deleteRichMenuAliasWithHttpInfo($richMenuAliasId, string $conten
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 400:
@@ -2352,8 +2133,10 @@ public function deleteRichMenuAliasWithHttpInfo($richMenuAliasId, string $conten
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -2567,34 +2350,15 @@ public function getAggregationUnitNameListWithHttpInfo($limit = null, $start = n
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GetAggregationUnitNameListResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GetAggregationUnitNameListResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GetAggregationUnitNameListResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GetAggregationUnitNameListResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -2608,34 +2372,11 @@ public function getAggregationUnitNameListWithHttpInfo($limit = null, $start = n
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GetAggregationUnitNameListResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GetAggregationUnitNameListResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -2645,8 +2386,10 @@ public function getAggregationUnitNameListWithHttpInfo($limit = null, $start = n
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -2877,34 +2620,15 @@ public function getAggregationUnitUsageWithHttpInfo(string $contentType = self::
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GetAggregationUnitUsageResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GetAggregationUnitUsageResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GetAggregationUnitUsageResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GetAggregationUnitUsageResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -2918,34 +2642,11 @@ public function getAggregationUnitUsageWithHttpInfo(string $contentType = self::
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GetAggregationUnitUsageResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GetAggregationUnitUsageResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -2955,8 +2656,10 @@ public function getAggregationUnitUsageWithHttpInfo(string $contentType = self::
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -3161,34 +2864,15 @@ public function getBotInfoWithHttpInfo(string $contentType = self::contentTypes[
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\BotInfoResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\BotInfoResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\BotInfoResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\BotInfoResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -3202,34 +2886,11 @@ public function getBotInfoWithHttpInfo(string $contentType = self::contentTypes[
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\BotInfoResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\BotInfoResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -3239,8 +2900,10 @@ public function getBotInfoWithHttpInfo(string $contentType = self::contentTypes[
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -3447,88 +3110,27 @@ public function getCouponDetailWithHttpInfo($couponId, string $contentType = sel
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\CouponResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\CouponResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\CouponResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\CouponResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 404:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -3542,34 +3144,11 @@ public function getCouponDetailWithHttpInfo($couponId, string $contentType = sel
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\CouponResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\CouponResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -3579,7 +3158,7 @@ public function getCouponDetailWithHttpInfo($couponId, string $contentType = sel
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -3587,7 +3166,7 @@ public function getCouponDetailWithHttpInfo($couponId, string $contentType = sel
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 404:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -3595,8 +3174,10 @@ public function getCouponDetailWithHttpInfo($couponId, string $contentType = sel
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -3819,34 +3400,15 @@ public function getDefaultRichMenuIdWithHttpInfo(string $contentType = self::con
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RichMenuIdResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RichMenuIdResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -3860,34 +3422,11 @@ public function getDefaultRichMenuIdWithHttpInfo(string $contentType = self::con
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -3897,8 +3436,10 @@ public function getDefaultRichMenuIdWithHttpInfo(string $contentType = self::con
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -4107,34 +3648,15 @@ public function getFollowersWithHttpInfo($start = null, $limit = 300, string $co
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GetFollowersResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GetFollowersResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GetFollowersResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GetFollowersResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -4148,34 +3670,11 @@ public function getFollowersWithHttpInfo($start = null, $limit = 300, string $co
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GetFollowersResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GetFollowersResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -4185,8 +3684,10 @@ public function getFollowersWithHttpInfo($start = null, $limit = 300, string $co
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -4422,34 +3923,15 @@ public function getGroupMemberCountWithHttpInfo($groupId, string $contentType =
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GroupMemberCountResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GroupMemberCountResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GroupMemberCountResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GroupMemberCountResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -4463,34 +3945,11 @@ public function getGroupMemberCountWithHttpInfo($groupId, string $contentType =
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GroupMemberCountResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GroupMemberCountResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -4500,8 +3959,10 @@ public function getGroupMemberCountWithHttpInfo($groupId, string $contentType =
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -4728,34 +4189,15 @@ public function getGroupMemberProfileWithHttpInfo($groupId, $userId, string $con
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GroupUserProfileResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GroupUserProfileResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GroupUserProfileResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GroupUserProfileResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -4769,34 +4211,11 @@ public function getGroupMemberProfileWithHttpInfo($groupId, $userId, string $con
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GroupUserProfileResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GroupUserProfileResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -4806,8 +4225,10 @@ public function getGroupMemberProfileWithHttpInfo($groupId, $userId, string $con
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -5052,34 +4473,15 @@ public function getGroupMembersIdsWithHttpInfo($groupId, $start = null, string $
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\MembersIdsResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\MembersIdsResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\MembersIdsResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\MembersIdsResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -5093,34 +4495,11 @@ public function getGroupMembersIdsWithHttpInfo($groupId, $start = null, string $
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\MembersIdsResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\MembersIdsResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -5130,8 +4509,10 @@ public function getGroupMembersIdsWithHttpInfo($groupId, $start = null, string $
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -5369,34 +4750,15 @@ public function getGroupSummaryWithHttpInfo($groupId, string $contentType = self
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GroupSummaryResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GroupSummaryResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GroupSummaryResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GroupSummaryResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -5410,34 +4772,11 @@ public function getGroupSummaryWithHttpInfo($groupId, string $contentType = self
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GroupSummaryResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GroupSummaryResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -5447,8 +4786,10 @@ public function getGroupSummaryWithHttpInfo($groupId, string $contentType = self
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -5677,88 +5018,27 @@ public function getJoinedMembershipUsersWithHttpInfo($membershipId, $start = nul
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GetJoinedMembershipUsersResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GetJoinedMembershipUsersResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GetJoinedMembershipUsersResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GetJoinedMembershipUsersResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 404:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -5772,34 +5052,11 @@ public function getJoinedMembershipUsersWithHttpInfo($membershipId, $start = nul
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GetJoinedMembershipUsersResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GetJoinedMembershipUsersResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -5809,7 +5066,7 @@ public function getJoinedMembershipUsersWithHttpInfo($membershipId, $start = nul
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -5817,7 +5074,7 @@ public function getJoinedMembershipUsersWithHttpInfo($membershipId, $start = nul
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 404:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -5825,8 +5082,10 @@ public function getJoinedMembershipUsersWithHttpInfo($membershipId, $start = nul
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -6081,61 +5340,21 @@ public function getMembershipListWithHttpInfo(string $contentType = self::conten
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\MembershipListResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\MembershipListResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\MembershipListResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\MembershipListResponse',
+                        $request,
+                        $response,
+                    );
                 case 404:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -6149,34 +5368,11 @@ public function getMembershipListWithHttpInfo(string $contentType = self::conten
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\MembershipListResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\MembershipListResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -6186,7 +5382,7 @@ public function getMembershipListWithHttpInfo(string $contentType = self::conten
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 404:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -6194,8 +5390,10 @@ public function getMembershipListWithHttpInfo(string $contentType = self::conten
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -6402,88 +5600,27 @@ public function getMembershipSubscriptionWithHttpInfo($userId, string $contentTy
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GetMembershipSubscriptionResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GetMembershipSubscriptionResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GetMembershipSubscriptionResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GetMembershipSubscriptionResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 404:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -6497,34 +5634,11 @@ public function getMembershipSubscriptionWithHttpInfo($userId, string $contentTy
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GetMembershipSubscriptionResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GetMembershipSubscriptionResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -6534,7 +5648,7 @@ public function getMembershipSubscriptionWithHttpInfo($userId, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -6542,7 +5656,7 @@ public function getMembershipSubscriptionWithHttpInfo($userId, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 404:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -6550,8 +5664,10 @@ public function getMembershipSubscriptionWithHttpInfo($userId, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -6774,34 +5890,15 @@ public function getMessageQuotaWithHttpInfo(string $contentType = self::contentT
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\MessageQuotaResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\MessageQuotaResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\MessageQuotaResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\MessageQuotaResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -6815,34 +5912,11 @@ public function getMessageQuotaWithHttpInfo(string $contentType = self::contentT
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\MessageQuotaResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\MessageQuotaResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -6852,8 +5926,10 @@ public function getMessageQuotaWithHttpInfo(string $contentType = self::contentT
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -7058,34 +6134,15 @@ public function getMessageQuotaConsumptionWithHttpInfo(string $contentType = sel
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\QuotaConsumptionResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\QuotaConsumptionResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\QuotaConsumptionResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\QuotaConsumptionResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -7099,34 +6156,11 @@ public function getMessageQuotaConsumptionWithHttpInfo(string $contentType = sel
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\QuotaConsumptionResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\QuotaConsumptionResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -7136,8 +6170,10 @@ public function getMessageQuotaConsumptionWithHttpInfo(string $contentType = sel
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -7344,34 +6380,15 @@ public function getNarrowcastProgressWithHttpInfo($requestId, string $contentTyp
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\NarrowcastProgressResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\NarrowcastProgressResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\NarrowcastProgressResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\NarrowcastProgressResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -7385,34 +6402,11 @@ public function getNarrowcastProgressWithHttpInfo($requestId, string $contentTyp
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\NarrowcastProgressResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\NarrowcastProgressResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -7422,8 +6416,10 @@ public function getNarrowcastProgressWithHttpInfo($requestId, string $contentTyp
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -7649,34 +6645,15 @@ public function getNumberOfSentBroadcastMessagesWithHttpInfo($date, string $cont
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -7690,34 +6667,11 @@ public function getNumberOfSentBroadcastMessagesWithHttpInfo($date, string $cont
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -7727,8 +6681,10 @@ public function getNumberOfSentBroadcastMessagesWithHttpInfo($date, string $cont
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -7954,34 +6910,15 @@ public function getNumberOfSentMulticastMessagesWithHttpInfo($date, string $cont
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -7995,34 +6932,11 @@ public function getNumberOfSentMulticastMessagesWithHttpInfo($date, string $cont
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -8032,8 +6946,10 @@ public function getNumberOfSentMulticastMessagesWithHttpInfo($date, string $cont
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -8259,34 +7175,15 @@ public function getNumberOfSentPushMessagesWithHttpInfo($date, string $contentTy
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -8300,34 +7197,11 @@ public function getNumberOfSentPushMessagesWithHttpInfo($date, string $contentTy
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -8337,8 +7211,10 @@ public function getNumberOfSentPushMessagesWithHttpInfo($date, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -8564,34 +7440,15 @@ public function getNumberOfSentReplyMessagesWithHttpInfo($date, string $contentT
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -8605,34 +7462,11 @@ public function getNumberOfSentReplyMessagesWithHttpInfo($date, string $contentT
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -8642,8 +7476,10 @@ public function getNumberOfSentReplyMessagesWithHttpInfo($date, string $contentT
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -8869,34 +7705,15 @@ public function getPNPMessageStatisticsWithHttpInfo($date, string $contentType =
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -8910,34 +7727,11 @@ public function getPNPMessageStatisticsWithHttpInfo($date, string $contentType =
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\NumberOfMessagesResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -8947,8 +7741,10 @@ public function getPNPMessageStatisticsWithHttpInfo($date, string $contentType =
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -9177,34 +7973,15 @@ public function getProfileWithHttpInfo($userId, string $contentType = self::cont
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\UserProfileResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\UserProfileResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\UserProfileResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\UserProfileResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -9218,34 +7995,11 @@ public function getProfileWithHttpInfo($userId, string $contentType = self::cont
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\UserProfileResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\UserProfileResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -9255,8 +8009,10 @@ public function getProfileWithHttpInfo($userId, string $contentType = self::cont
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -9481,34 +8237,15 @@ public function getRichMenuWithHttpInfo($richMenuId, string $contentType = self:
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RichMenuResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RichMenuResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RichMenuResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RichMenuResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -9522,34 +8259,11 @@ public function getRichMenuWithHttpInfo($richMenuId, string $contentType = self:
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RichMenuResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RichMenuResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -9559,8 +8273,10 @@ public function getRichMenuWithHttpInfo($richMenuId, string $contentType = self:
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -9785,34 +8501,15 @@ public function getRichMenuAliasWithHttpInfo($richMenuAliasId, string $contentTy
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RichMenuAliasResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RichMenuAliasResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RichMenuAliasResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RichMenuAliasResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -9826,34 +8523,11 @@ public function getRichMenuAliasWithHttpInfo($richMenuAliasId, string $contentTy
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RichMenuAliasResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RichMenuAliasResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -9863,8 +8537,10 @@ public function getRichMenuAliasWithHttpInfo($richMenuAliasId, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -10087,34 +8763,15 @@ public function getRichMenuAliasListWithHttpInfo(string $contentType = self::con
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RichMenuAliasListResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RichMenuAliasListResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RichMenuAliasListResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RichMenuAliasListResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -10128,34 +8785,11 @@ public function getRichMenuAliasListWithHttpInfo(string $contentType = self::con
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RichMenuAliasListResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RichMenuAliasListResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -10165,8 +8799,10 @@ public function getRichMenuAliasListWithHttpInfo(string $contentType = self::con
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -10373,34 +9009,15 @@ public function getRichMenuBatchProgressWithHttpInfo($requestId, string $content
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RichMenuBatchProgressResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RichMenuBatchProgressResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RichMenuBatchProgressResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RichMenuBatchProgressResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -10414,34 +9031,11 @@ public function getRichMenuBatchProgressWithHttpInfo($requestId, string $content
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RichMenuBatchProgressResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RichMenuBatchProgressResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -10451,8 +9045,10 @@ public function getRichMenuBatchProgressWithHttpInfo($requestId, string $content
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -10678,34 +9274,15 @@ public function getRichMenuIdOfUserWithHttpInfo($userId, string $contentType = s
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RichMenuIdResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RichMenuIdResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -10719,34 +9296,11 @@ public function getRichMenuIdOfUserWithHttpInfo($userId, string $contentType = s
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RichMenuIdResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -10756,8 +9310,10 @@ public function getRichMenuIdOfUserWithHttpInfo($userId, string $contentType = s
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -10980,34 +9536,15 @@ public function getRichMenuListWithHttpInfo(string $contentType = self::contentT
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RichMenuListResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RichMenuListResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RichMenuListResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RichMenuListResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -11021,34 +9558,11 @@ public function getRichMenuListWithHttpInfo(string $contentType = self::contentT
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RichMenuListResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RichMenuListResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -11058,8 +9572,10 @@ public function getRichMenuListWithHttpInfo(string $contentType = self::contentT
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -11266,34 +9782,15 @@ public function getRoomMemberCountWithHttpInfo($roomId, string $contentType = se
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RoomMemberCountResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RoomMemberCountResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RoomMemberCountResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RoomMemberCountResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -11307,34 +9804,11 @@ public function getRoomMemberCountWithHttpInfo($roomId, string $contentType = se
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\RoomMemberCountResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RoomMemberCountResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -11344,8 +9818,10 @@ public function getRoomMemberCountWithHttpInfo($roomId, string $contentType = se
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -11572,34 +10048,15 @@ public function getRoomMemberProfileWithHttpInfo($roomId, $userId, string $conte
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\RoomUserProfileResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\RoomUserProfileResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\RoomUserProfileResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\RoomUserProfileResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -11608,39 +10065,16 @@ public function getRoomMemberProfileWithHttpInfo($roomId, $userId, string $conte
                         (string) $request->getUri()
                     ),
                     $statusCode,
-                    $response->getHeaders(),
-                    (string) $response->getBody()
-                );
-            }
-
-            $returnType = '\LINE\Clients\MessagingApi\Model\RoomUserProfileResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
+                    $response->getHeaders(),
+                    (string) $response->getBody()
+                );
             }
 
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\RoomUserProfileResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -11650,8 +10084,10 @@ public function getRoomMemberProfileWithHttpInfo($roomId, $userId, string $conte
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -11896,34 +10332,15 @@ public function getRoomMembersIdsWithHttpInfo($roomId, $start = null, string $co
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\MembersIdsResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\MembersIdsResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\MembersIdsResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\MembersIdsResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -11937,34 +10354,11 @@ public function getRoomMembersIdsWithHttpInfo($roomId, $start = null, string $co
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\MembersIdsResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\MembersIdsResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -11974,8 +10368,10 @@ public function getRoomMembersIdsWithHttpInfo($roomId, $start = null, string $co
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -12211,34 +10607,15 @@ public function getWebhookEndpointWithHttpInfo(string $contentType = self::conte
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GetWebhookEndpointResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GetWebhookEndpointResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GetWebhookEndpointResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GetWebhookEndpointResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -12252,34 +10629,11 @@ public function getWebhookEndpointWithHttpInfo(string $contentType = self::conte
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GetWebhookEndpointResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GetWebhookEndpointResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -12289,8 +10643,10 @@ public function getWebhookEndpointWithHttpInfo(string $contentType = self::conte
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -12497,34 +10853,15 @@ public function issueLinkTokenWithHttpInfo($userId, string $contentType = self::
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\IssueLinkTokenResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\IssueLinkTokenResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\IssueLinkTokenResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\IssueLinkTokenResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -12538,34 +10875,11 @@ public function issueLinkTokenWithHttpInfo($userId, string $contentType = self::
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\IssueLinkTokenResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\IssueLinkTokenResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -12575,8 +10889,10 @@ public function issueLinkTokenWithHttpInfo($userId, string $contentType = self::
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -12799,7 +11115,6 @@ public function leaveGroupWithHttpInfo($groupId, string $contentType = self::con
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 400:
@@ -12809,7 +11124,7 @@ public function leaveGroupWithHttpInfo($groupId, string $contentType = self::con
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 404:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -12817,8 +11132,10 @@ public function leaveGroupWithHttpInfo($groupId, string $contentType = self::con
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -13028,10 +11345,11 @@ public function leaveRoomWithHttpInfo($roomId, string $contentType = self::conte
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -13243,10 +11561,11 @@ public function linkRichMenuIdToUserWithHttpInfo($userId, $richMenuId, string $c
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -13474,10 +11793,11 @@ public function linkRichMenuIdToUsersWithHttpInfo($richMenuBulkLinkRequest, stri
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -13692,61 +12012,21 @@ public function listCouponWithHttpInfo($status = null, $start = null, $limit = 2
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\MessagingApiPagerCouponListResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\MessagingApiPagerCouponListResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\MessagingApiPagerCouponListResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\MessagingApiPagerCouponListResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -13760,34 +12040,11 @@ public function listCouponWithHttpInfo($status = null, $start = null, $limit = 2
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\MessagingApiPagerCouponListResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\MessagingApiPagerCouponListResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -13797,7 +12054,7 @@ public function listCouponWithHttpInfo($status = null, $start = null, $limit = 2
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -13805,8 +12062,10 @@ public function listCouponWithHttpInfo($status = null, $start = null, $limit = 2
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -14056,10 +12315,11 @@ public function markMessagesAsReadWithHttpInfo($markMessagesAsReadRequest, strin
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -14268,7 +12528,6 @@ public function markMessagesAsReadByTokenWithHttpInfo($markMessagesAsReadByToken
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 400:
@@ -14278,8 +12537,10 @@ public function markMessagesAsReadByTokenWithHttpInfo($markMessagesAsReadByToken
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -14492,142 +12753,39 @@ public function multicastWithHttpInfo($multicastRequest, $xLineRetryKey = null,
 
             switch($statusCode) {
                 case 200:
-                    if ('object' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('object' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, 'object', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        'object',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 403:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 409:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 429:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -14641,34 +12799,11 @@ public function multicastWithHttpInfo($multicastRequest, $xLineRetryKey = null,
                 );
             }
 
-            $returnType = 'object';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                'object',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -14678,7 +12813,7 @@ public function multicastWithHttpInfo($multicastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -14686,7 +12821,7 @@ public function multicastWithHttpInfo($multicastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 403:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -14694,7 +12829,7 @@ public function multicastWithHttpInfo($multicastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 409:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -14702,7 +12837,7 @@ public function multicastWithHttpInfo($multicastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 429:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -14710,8 +12845,10 @@ public function multicastWithHttpInfo($multicastRequest, $xLineRetryKey = null,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -14945,142 +13082,39 @@ public function narrowcastWithHttpInfo($narrowcastRequest, $xLineRetryKey = null
 
             switch($statusCode) {
                 case 202:
-                    if ('object' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('object' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, 'object', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        'object',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 403:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
-                case 409:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
-                case 429:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
+                case 409:
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
+                case 429:
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -15094,34 +13128,11 @@ public function narrowcastWithHttpInfo($narrowcastRequest, $xLineRetryKey = null
                 );
             }
 
-            $returnType = 'object';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                'object',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 202:
@@ -15131,7 +13142,7 @@ public function narrowcastWithHttpInfo($narrowcastRequest, $xLineRetryKey = null
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -15139,7 +13150,7 @@ public function narrowcastWithHttpInfo($narrowcastRequest, $xLineRetryKey = null
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 403:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -15147,7 +13158,7 @@ public function narrowcastWithHttpInfo($narrowcastRequest, $xLineRetryKey = null
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 409:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -15155,7 +13166,7 @@ public function narrowcastWithHttpInfo($narrowcastRequest, $xLineRetryKey = null
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 429:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -15163,8 +13174,10 @@ public function narrowcastWithHttpInfo($narrowcastRequest, $xLineRetryKey = null
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -15398,142 +13411,39 @@ public function pushMessageWithHttpInfo($pushMessageRequest, $xLineRetryKey = nu
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\PushMessageResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\PushMessageResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\PushMessageResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\PushMessageResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 403:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 409:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 429:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -15547,34 +13457,11 @@ public function pushMessageWithHttpInfo($pushMessageRequest, $xLineRetryKey = nu
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\PushMessageResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\PushMessageResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -15584,7 +13471,7 @@ public function pushMessageWithHttpInfo($pushMessageRequest, $xLineRetryKey = nu
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -15592,7 +13479,7 @@ public function pushMessageWithHttpInfo($pushMessageRequest, $xLineRetryKey = nu
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 403:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -15600,7 +13487,7 @@ public function pushMessageWithHttpInfo($pushMessageRequest, $xLineRetryKey = nu
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 409:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -15608,7 +13495,7 @@ public function pushMessageWithHttpInfo($pushMessageRequest, $xLineRetryKey = nu
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 429:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -15616,8 +13503,10 @@ public function pushMessageWithHttpInfo($pushMessageRequest, $xLineRetryKey = nu
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -15849,7 +13738,6 @@ public function pushMessagesByPhoneWithHttpInfo($pnpMessagesRequest, $xLineDeliv
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 422:
@@ -15859,8 +13747,10 @@ public function pushMessagesByPhoneWithHttpInfo($pnpMessagesRequest, $xLineDeliv
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -16085,88 +13975,27 @@ public function replyMessageWithHttpInfo($replyMessageRequest, string $contentTy
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\ReplyMessageResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ReplyMessageResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ReplyMessageResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ReplyMessageResponse',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
                 case 429:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -16180,34 +14009,11 @@ public function replyMessageWithHttpInfo($replyMessageRequest, string $contentTy
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\ReplyMessageResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\ReplyMessageResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -16217,7 +14023,7 @@ public function replyMessageWithHttpInfo($replyMessageRequest, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -16225,7 +14031,7 @@ public function replyMessageWithHttpInfo($replyMessageRequest, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 429:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -16233,8 +14039,10 @@ public function replyMessageWithHttpInfo($replyMessageRequest, string $contentTy
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -16456,10 +14264,11 @@ public function richMenuBatchWithHttpInfo($richMenuBatchRequest, string $content
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -16668,10 +14477,11 @@ public function setDefaultRichMenuWithHttpInfo($richMenuId, string $contentType
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -16881,10 +14691,11 @@ public function setWebhookEndpointWithHttpInfo($setWebhookEndpointRequest, strin
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -17095,61 +14906,21 @@ public function showLoadingAnimationWithHttpInfo($showLoadingAnimationRequest, s
 
             switch($statusCode) {
                 case 202:
-                    if ('object' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('object' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, 'object', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        'object',
+                        $request,
+                        $response,
+                    );
                 case 400:
-                    if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\ErrorResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\ErrorResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\ErrorResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -17163,34 +14934,11 @@ public function showLoadingAnimationWithHttpInfo($showLoadingAnimationRequest, s
                 );
             }
 
-            $returnType = 'object';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                'object',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 202:
@@ -17200,7 +14948,7 @@ public function showLoadingAnimationWithHttpInfo($showLoadingAnimationRequest, s
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
                 case 400:
                     $data = ObjectSerializer::deserialize(
                         $e->getResponseBody(),
@@ -17208,8 +14956,10 @@ public function showLoadingAnimationWithHttpInfo($showLoadingAnimationRequest, s
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -17433,34 +15183,15 @@ public function testWebhookEndpointWithHttpInfo($testWebhookEndpointRequest = nu
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\TestWebhookEndpointResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\TestWebhookEndpointResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\TestWebhookEndpointResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\TestWebhookEndpointResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -17474,34 +15205,11 @@ public function testWebhookEndpointWithHttpInfo($testWebhookEndpointRequest = nu
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\TestWebhookEndpointResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\TestWebhookEndpointResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -17511,8 +15219,10 @@ public function testWebhookEndpointWithHttpInfo($testWebhookEndpointRequest = nu
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -17728,10 +15438,11 @@ public function unlinkRichMenuIdFromUserWithHttpInfo($userId, string $contentTyp
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -17941,10 +15652,11 @@ public function unlinkRichMenuIdFromUsersWithHttpInfo($richMenuBulkUnlinkRequest
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -18155,7 +15867,6 @@ public function updateRichMenuAliasWithHttpInfo($richMenuAliasId, $updateRichMen
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 400:
@@ -18165,8 +15876,10 @@ public function updateRichMenuAliasWithHttpInfo($richMenuAliasId, $updateRichMen
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -18393,10 +16106,11 @@ public function validateBroadcastWithHttpInfo($validateMessageRequest, string $c
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -18605,10 +16319,11 @@ public function validateMulticastWithHttpInfo($validateMessageRequest, string $c
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -18817,10 +16532,11 @@ public function validateNarrowcastWithHttpInfo($validateMessageRequest, string $
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -19029,10 +16745,11 @@ public function validatePushWithHttpInfo($validateMessageRequest, string $conten
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -19241,10 +16958,11 @@ public function validateReplyWithHttpInfo($validateMessageRequest, string $conte
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -19453,10 +17171,11 @@ public function validateRichMenuBatchRequestWithHttpInfo($richMenuBatchRequest,
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -19665,10 +17384,11 @@ public function validateRichMenuObjectWithHttpInfo($richMenuRequest, string $con
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -19840,6 +17560,57 @@ protected function createHttpClientOption()
             }
         }
 
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
         return $options;
     }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
 }
diff --git a/src/clients/messaging-api/lib/Api/MessagingApiBlobApi.php b/src/clients/messaging-api/lib/Api/MessagingApiBlobApi.php
index 26ecd31d..d7d2011b 100644
--- a/src/clients/messaging-api/lib/Api/MessagingApiBlobApi.php
+++ b/src/clients/messaging-api/lib/Api/MessagingApiBlobApi.php
@@ -16,7 +16,7 @@
  */
 /**
  * MessagingApiBlobApi
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -49,8 +49,11 @@
 use GuzzleHttp\Psr7\MultipartStream;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 use LINE\Clients\MessagingApi\ApiException;
 use LINE\Clients\MessagingApi\Configuration;
+use LINE\Clients\MessagingApi\FormDataProcessor;
 use LINE\Clients\MessagingApi\HeaderSelector;
 use LINE\Clients\MessagingApi\ObjectSerializer;
 
@@ -216,34 +219,15 @@ public function getMessageContentWithHttpInfo($messageId, ?int $hostIndex = null
 
             switch($statusCode) {
                 case 200:
-                    if ('\SplFileObject' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\SplFileObject' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\SplFileObject', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\SplFileObject',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -257,34 +241,11 @@ public function getMessageContentWithHttpInfo($messageId, ?int $hostIndex = null
                 );
             }
 
-            $returnType = '\SplFileObject';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\SplFileObject',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -294,8 +255,10 @@ public function getMessageContentWithHttpInfo($messageId, ?int $hostIndex = null
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -575,34 +538,15 @@ public function getMessageContentPreviewWithHttpInfo($messageId, ?int $hostIndex
 
             switch($statusCode) {
                 case 200:
-                    if ('\SplFileObject' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\SplFileObject' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\SplFileObject', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\SplFileObject',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -616,34 +560,11 @@ public function getMessageContentPreviewWithHttpInfo($messageId, ?int $hostIndex
                 );
             }
 
-            $returnType = '\SplFileObject';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\SplFileObject',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -653,8 +574,10 @@ public function getMessageContentPreviewWithHttpInfo($messageId, ?int $hostIndex
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -934,34 +857,15 @@ public function getMessageContentTranscodingByMessageIdWithHttpInfo($messageId,
 
             switch($statusCode) {
                 case 200:
-                    if ('\LINE\Clients\MessagingApi\Model\GetMessageContentTranscodingResponse' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\LINE\Clients\MessagingApi\Model\GetMessageContentTranscodingResponse' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\LINE\Clients\MessagingApi\Model\GetMessageContentTranscodingResponse', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\LINE\Clients\MessagingApi\Model\GetMessageContentTranscodingResponse',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -975,34 +879,11 @@ public function getMessageContentTranscodingByMessageIdWithHttpInfo($messageId,
                 );
             }
 
-            $returnType = '\LINE\Clients\MessagingApi\Model\GetMessageContentTranscodingResponse';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\LINE\Clients\MessagingApi\Model\GetMessageContentTranscodingResponse',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1012,8 +893,10 @@ public function getMessageContentTranscodingByMessageIdWithHttpInfo($messageId,
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1293,34 +1176,15 @@ public function getRichMenuImageWithHttpInfo($richMenuId, ?int $hostIndex = null
 
             switch($statusCode) {
                 case 200:
-                    if ('\SplFileObject' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('\SplFileObject' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, '\SplFileObject', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        '\SplFileObject',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -1334,34 +1198,11 @@ public function getRichMenuImageWithHttpInfo($richMenuId, ?int $hostIndex = null
                 );
             }
 
-            $returnType = '\SplFileObject';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                '\SplFileObject',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -1371,8 +1212,10 @@ public function getRichMenuImageWithHttpInfo($richMenuId, ?int $hostIndex = null
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -1652,10 +1495,11 @@ public function setRichMenuImageWithHttpInfo($richMenuId, $body, ?int $hostIndex
 
 
             return [null, $statusCode, $response->getHeaders()];
-
         } catch (ApiException $e) {
             switch ($e->getCode()) {
             }
+        
+
             throw $e;
         }
     }
@@ -1888,6 +1732,57 @@ protected function createHttpClientOption()
             }
         }
 
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
         return $options;
     }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
 }
diff --git a/src/clients/messaging-api/lib/ApiException.php b/src/clients/messaging-api/lib/ApiException.php
index bfe00200..f821e7d6 100644
--- a/src/clients/messaging-api/lib/ApiException.php
+++ b/src/clients/messaging-api/lib/ApiException.php
@@ -16,7 +16,7 @@
  */
 /**
  * ApiException
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Configuration.php b/src/clients/messaging-api/lib/Configuration.php
index 974ecafc..1eb5f878 100644
--- a/src/clients/messaging-api/lib/Configuration.php
+++ b/src/clients/messaging-api/lib/Configuration.php
@@ -16,7 +16,7 @@
  */
 /**
  * Configuration
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -44,7 +44,7 @@
 
 /**
  * Configuration Class Doc Comment
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -138,6 +138,20 @@ class Configuration
      */
     protected $tempFolderPath;
 
+    /**
+     * Path to a certificate file, for mTLS
+     *
+     * @var string
+     */
+    protected $certFile;
+
+    /**
+     * Path to a key file, for mTLS
+     *
+     * @var string
+     */
+    protected $keyFile;
+
     /**
      * Constructor
      */
@@ -411,6 +425,49 @@ public function getTempFolderPath()
         return $this->tempFolderPath;
     }
 
+    /**
+     * Sets the certificate file path, for mTLS
+     *
+     * @return $this
+     */
+     public function setCertFile($certFile)
+     {
+        $this->certFile = $certFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate file path, for mTLS
+     *
+     * @return string Certificate file path
+     */
+    public function getCertFile()
+    {
+        return $this->certFile;
+    }
+
+    /**
+     * Sets the certificate key path, for mTLS
+     *
+     * @return $this
+     */
+     public function setKeyFile($keyFile)
+     {
+        $this->keyFile = $keyFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate key path, for mTLS
+     *
+     * @return string Certificate key path
+     */
+    public function getKeyFile()
+    {
+        return $this->keyFile;
+    }
+    
+
     /**
      * Gets the default configuration instance
      *
diff --git a/src/clients/messaging-api/lib/FormDataProcessor.php b/src/clients/messaging-api/lib/FormDataProcessor.php
new file mode 100644
index 00000000..57b06e9e
--- /dev/null
+++ b/src/clients/messaging-api/lib/FormDataProcessor.php
@@ -0,0 +1,261 @@
+<?php
+/**
+ * Copyright 2026 LINE Corporation
+ *
+ * LINE Corporation licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+/**
+ * FormDataProcessor
+ * PHP version 7.4
+ *
+ * @category Class
+ * @package  LINE\Clients\MessagingApi
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+
+/**
+ * LINE Messaging API
+ *
+ * This document describes LINE Messaging API.
+ *
+ * The version of the OpenAPI document: 0.0.1
+ * Generated by: https://openapi-generator.tech
+ * Generator version: 7.21.0
+ */
+
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+namespace LINE\Clients\MessagingApi;
+
+use ArrayAccess;
+use DateTime;
+use GuzzleHttp\Psr7\Utils;
+use Psr\Http\Message\StreamInterface;
+use SplFileObject;
+use LINE\Clients\MessagingApi\Model\ModelInterface;
+
+/**
+ * FormDataProcessor Class Doc Comment
+ *
+ * @category Class
+ * @package  LINE\Clients\MessagingApi
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+class FormDataProcessor
+{
+    /**
+     * Tags whether payload passed to ::prepare() contains one or more
+     * SplFileObject or stream values.
+     */
+    public bool $has_file = false;
+
+    /**
+     * Take value and turn it into an array suitable for inclusion in
+     * the http body (form parameter). If it's a string, pass through unchanged
+     * If it's a datetime object, format it in ISO8601
+     *
+     * @param array<string|bool|array|DateTime|ArrayAccess|SplFileObject> $values the value of the form parameter
+     *
+     * @return array [key => value] of formdata
+     */
+    public function prepare(array $values): array
+    {
+        $this->has_file = false;
+        $result = [];
+
+        foreach ($values as $k => $v) {
+            if ($v === null) {
+                continue;
+            }
+
+            $result[$k] = $this->makeFormSafe($v);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Flattens a multi-level array of data and generates a single-level array
+     * compatible with formdata - a single-level array where the keys use bracket
+     * notation to signify nested data.
+     *
+     * credit: https://github.com/FranBar1966/FlatPHP
+     */
+    public static function flatten(array $source, string $start = ''): array
+    {
+        $opt = [
+            'prefix'          => '[',
+            'suffix'          => ']',
+            'suffix-end'      => true,
+            'prefix-list'     => '[',
+            'suffix-list'     => ']',
+            'suffix-list-end' => true,
+        ];
+
+        if ($start === '') {
+            $currentPrefix    = '';
+            $currentSuffix    = '';
+            $currentSuffixEnd = false;
+        } elseif (array_is_list($source)) {
+            $currentPrefix    = $opt['prefix-list'];
+            $currentSuffix    = $opt['suffix-list'];
+            $currentSuffixEnd = $opt['suffix-list-end'];
+        } else {
+            $currentPrefix    = $opt['prefix'];
+            $currentSuffix    = $opt['suffix'];
+            $currentSuffixEnd = $opt['suffix-end'];
+        }
+
+        $currentName = $start;
+        $result = [];
+
+        foreach ($source as $key => $val) {
+            $currentName .= $currentPrefix.$key;
+
+            if (is_array($val) && !empty($val)) {
+                $currentName .= $currentSuffix;
+                $result += self::flatten($val, $currentName);
+            } else {
+                if ($currentSuffixEnd) {
+                    $currentName .= $currentSuffix;
+                }
+
+                if (is_resource($val)) {
+                    $result[$currentName] = $val;
+                } else {
+                    $result[$currentName] = ObjectSerializer::toString($val);
+                }
+            }
+
+            $currentName = $start;
+        }
+
+        return $result;
+    }
+
+    /**
+     * formdata must be limited to scalars or arrays of scalar values,
+     * or a resource for a file upload. Here we iterate through all available
+     * data and identify how to handle each scenario
+     */
+    protected function makeFormSafe($value)
+    {
+        if ($value instanceof SplFileObject) {
+            return $this->processFiles([$value])[0];
+        }
+
+        if (is_resource($value)) {
+            $this->has_file = true;
+
+            return $value;
+        }
+
+        if ($value instanceof ModelInterface) {
+            return $this->processModel($value);
+        }
+
+        if (is_array($value) || (is_object($value) && !$value instanceof \DateTimeInterface)) {
+            $data = [];
+
+            foreach ($value as $k => $v) {
+                $data[$k] = $this->makeFormSafe($v);
+            }
+
+            return $data;
+        }
+
+        return ObjectSerializer::toString($value);
+    }
+
+    /**
+     * We are able to handle nested ModelInterface. We do not simply call
+     * json_decode(json_encode()) because any given model may have binary data
+     * or other data that cannot be serialized to a JSON string
+     */
+    protected function processModel(ModelInterface $model): array
+    {
+        $result = [];
+
+        foreach ($model::openAPITypes() as $name => $type) {
+            $value = $model->offsetGet($name);
+
+            if ($value === null) {
+                continue;
+            }
+
+            if (strpos($type, '\SplFileObject') !== false) {
+                $file = is_array($value) ? $value : [$value];
+                $result[$name] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($value instanceof ModelInterface) {
+                $result[$name] = $this->processModel($value);
+
+                continue;
+            }
+
+            if (is_array($value) || is_object($value)) {
+                $result[$name] = $this->makeFormSafe($value);
+
+                continue;
+            }
+
+            $result[$name] = ObjectSerializer::toString($value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Handle file data
+     */
+    protected function processFiles(array $files): array
+    {
+        $this->has_file = true;
+
+        $result = [];
+
+        foreach ($files as $i => $file) {
+            if (is_array($file)) {
+                $result[$i] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($file instanceof StreamInterface) {
+                $result[$i] = $file;
+
+                continue;
+            }
+
+            if ($file instanceof SplFileObject) {
+                $result[$i] = $this->tryFopen($file);
+            }
+        }
+
+        return $result;
+    }
+
+    private function tryFopen(SplFileObject $file)
+    {
+        return Utils::tryFopen($file->getRealPath(), 'rb');
+    }
+}
diff --git a/src/clients/messaging-api/lib/HeaderSelector.php b/src/clients/messaging-api/lib/HeaderSelector.php
index 00dc70e6..3fb883b6 100644
--- a/src/clients/messaging-api/lib/HeaderSelector.php
+++ b/src/clients/messaging-api/lib/HeaderSelector.php
@@ -16,7 +16,7 @@
  */
 /**
  * HeaderSelector
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AcquisitionConditionRequest.php b/src/clients/messaging-api/lib/Model/AcquisitionConditionRequest.php
index c0baf1a5..5a1a556a 100644
--- a/src/clients/messaging-api/lib/Model/AcquisitionConditionRequest.php
+++ b/src/clients/messaging-api/lib/Model/AcquisitionConditionRequest.php
@@ -17,7 +17,7 @@
 /**
  * AcquisitionConditionRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AcquisitionConditionResponse.php b/src/clients/messaging-api/lib/Model/AcquisitionConditionResponse.php
index 8870e067..b2636525 100644
--- a/src/clients/messaging-api/lib/Model/AcquisitionConditionResponse.php
+++ b/src/clients/messaging-api/lib/Model/AcquisitionConditionResponse.php
@@ -17,7 +17,7 @@
 /**
  * AcquisitionConditionResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Action.php b/src/clients/messaging-api/lib/Model/Action.php
index 45b401c8..904787d7 100644
--- a/src/clients/messaging-api/lib/Model/Action.php
+++ b/src/clients/messaging-api/lib/Model/Action.php
@@ -17,7 +17,7 @@
 /**
  * Action
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AgeDemographic.php b/src/clients/messaging-api/lib/Model/AgeDemographic.php
index b61efec3..a883b0dd 100644
--- a/src/clients/messaging-api/lib/Model/AgeDemographic.php
+++ b/src/clients/messaging-api/lib/Model/AgeDemographic.php
@@ -17,7 +17,7 @@
 /**
  * AgeDemographic
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AgeDemographicFilter.php b/src/clients/messaging-api/lib/Model/AgeDemographicFilter.php
index ad6b1758..56a001e7 100644
--- a/src/clients/messaging-api/lib/Model/AgeDemographicFilter.php
+++ b/src/clients/messaging-api/lib/Model/AgeDemographicFilter.php
@@ -17,7 +17,7 @@
 /**
  * AgeDemographicFilter
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AllMentionTarget.php b/src/clients/messaging-api/lib/Model/AllMentionTarget.php
index 6da81dab..061b9fcf 100644
--- a/src/clients/messaging-api/lib/Model/AllMentionTarget.php
+++ b/src/clients/messaging-api/lib/Model/AllMentionTarget.php
@@ -17,7 +17,7 @@
 /**
  * AllMentionTarget
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AltUri.php b/src/clients/messaging-api/lib/Model/AltUri.php
index bb7b7f84..d43eb4d2 100644
--- a/src/clients/messaging-api/lib/Model/AltUri.php
+++ b/src/clients/messaging-api/lib/Model/AltUri.php
@@ -17,7 +17,7 @@
 /**
  * AltUri
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AppTypeDemographic.php b/src/clients/messaging-api/lib/Model/AppTypeDemographic.php
index df5f2607..bb18d73e 100644
--- a/src/clients/messaging-api/lib/Model/AppTypeDemographic.php
+++ b/src/clients/messaging-api/lib/Model/AppTypeDemographic.php
@@ -17,7 +17,7 @@
 /**
  * AppTypeDemographic
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AppTypeDemographicFilter.php b/src/clients/messaging-api/lib/Model/AppTypeDemographicFilter.php
index 68213855..2bde1cc2 100644
--- a/src/clients/messaging-api/lib/Model/AppTypeDemographicFilter.php
+++ b/src/clients/messaging-api/lib/Model/AppTypeDemographicFilter.php
@@ -17,7 +17,7 @@
 /**
  * AppTypeDemographicFilter
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AreaDemographic.php b/src/clients/messaging-api/lib/Model/AreaDemographic.php
index 13510628..afa9ddc4 100644
--- a/src/clients/messaging-api/lib/Model/AreaDemographic.php
+++ b/src/clients/messaging-api/lib/Model/AreaDemographic.php
@@ -17,7 +17,7 @@
 /**
  * AreaDemographic
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AreaDemographicFilter.php b/src/clients/messaging-api/lib/Model/AreaDemographicFilter.php
index f41a9a1e..b4a07d67 100644
--- a/src/clients/messaging-api/lib/Model/AreaDemographicFilter.php
+++ b/src/clients/messaging-api/lib/Model/AreaDemographicFilter.php
@@ -17,7 +17,7 @@
 /**
  * AreaDemographicFilter
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AudienceRecipient.php b/src/clients/messaging-api/lib/Model/AudienceRecipient.php
index a6efd5d8..4f066f60 100644
--- a/src/clients/messaging-api/lib/Model/AudienceRecipient.php
+++ b/src/clients/messaging-api/lib/Model/AudienceRecipient.php
@@ -17,7 +17,7 @@
 /**
  * AudienceRecipient
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/AudioMessage.php b/src/clients/messaging-api/lib/Model/AudioMessage.php
index 442dc0a8..b201bd2c 100644
--- a/src/clients/messaging-api/lib/Model/AudioMessage.php
+++ b/src/clients/messaging-api/lib/Model/AudioMessage.php
@@ -17,7 +17,7 @@
 /**
  * AudioMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/BotInfoResponse.php b/src/clients/messaging-api/lib/Model/BotInfoResponse.php
index 59f29839..56b88729 100644
--- a/src/clients/messaging-api/lib/Model/BotInfoResponse.php
+++ b/src/clients/messaging-api/lib/Model/BotInfoResponse.php
@@ -17,7 +17,7 @@
 /**
  * BotInfoResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/BroadcastRequest.php b/src/clients/messaging-api/lib/Model/BroadcastRequest.php
index 72d180e7..9c362d7a 100644
--- a/src/clients/messaging-api/lib/Model/BroadcastRequest.php
+++ b/src/clients/messaging-api/lib/Model/BroadcastRequest.php
@@ -17,7 +17,7 @@
 /**
  * BroadcastRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ButtonsTemplate.php b/src/clients/messaging-api/lib/Model/ButtonsTemplate.php
index a506778c..c36df120 100644
--- a/src/clients/messaging-api/lib/Model/ButtonsTemplate.php
+++ b/src/clients/messaging-api/lib/Model/ButtonsTemplate.php
@@ -17,7 +17,7 @@
 /**
  * ButtonsTemplate
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CameraAction.php b/src/clients/messaging-api/lib/Model/CameraAction.php
index 801d6548..80c1c168 100644
--- a/src/clients/messaging-api/lib/Model/CameraAction.php
+++ b/src/clients/messaging-api/lib/Model/CameraAction.php
@@ -17,7 +17,7 @@
 /**
  * CameraAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CameraRollAction.php b/src/clients/messaging-api/lib/Model/CameraRollAction.php
index f0e5ad38..5a01d5a2 100644
--- a/src/clients/messaging-api/lib/Model/CameraRollAction.php
+++ b/src/clients/messaging-api/lib/Model/CameraRollAction.php
@@ -17,7 +17,7 @@
 /**
  * CameraRollAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CarouselColumn.php b/src/clients/messaging-api/lib/Model/CarouselColumn.php
index 42369953..f5665165 100644
--- a/src/clients/messaging-api/lib/Model/CarouselColumn.php
+++ b/src/clients/messaging-api/lib/Model/CarouselColumn.php
@@ -17,7 +17,7 @@
 /**
  * CarouselColumn
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CarouselTemplate.php b/src/clients/messaging-api/lib/Model/CarouselTemplate.php
index 08bca6c8..d8410734 100644
--- a/src/clients/messaging-api/lib/Model/CarouselTemplate.php
+++ b/src/clients/messaging-api/lib/Model/CarouselTemplate.php
@@ -17,7 +17,7 @@
 /**
  * CarouselTemplate
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CashBackFixedPriceInfoRequest.php b/src/clients/messaging-api/lib/Model/CashBackFixedPriceInfoRequest.php
index 20eef6c0..84a56882 100644
--- a/src/clients/messaging-api/lib/Model/CashBackFixedPriceInfoRequest.php
+++ b/src/clients/messaging-api/lib/Model/CashBackFixedPriceInfoRequest.php
@@ -17,7 +17,7 @@
 /**
  * CashBackFixedPriceInfoRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CashBackFixedPriceInfoResponse.php b/src/clients/messaging-api/lib/Model/CashBackFixedPriceInfoResponse.php
index 120425bc..6881bcc8 100644
--- a/src/clients/messaging-api/lib/Model/CashBackFixedPriceInfoResponse.php
+++ b/src/clients/messaging-api/lib/Model/CashBackFixedPriceInfoResponse.php
@@ -17,7 +17,7 @@
 /**
  * CashBackFixedPriceInfoResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CashBackPercentagePriceInfoRequest.php b/src/clients/messaging-api/lib/Model/CashBackPercentagePriceInfoRequest.php
index 804bc62b..d80ca32b 100644
--- a/src/clients/messaging-api/lib/Model/CashBackPercentagePriceInfoRequest.php
+++ b/src/clients/messaging-api/lib/Model/CashBackPercentagePriceInfoRequest.php
@@ -17,7 +17,7 @@
 /**
  * CashBackPercentagePriceInfoRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CashBackPercentagePriceInfoResponse.php b/src/clients/messaging-api/lib/Model/CashBackPercentagePriceInfoResponse.php
index 5892d59b..66462ea5 100644
--- a/src/clients/messaging-api/lib/Model/CashBackPercentagePriceInfoResponse.php
+++ b/src/clients/messaging-api/lib/Model/CashBackPercentagePriceInfoResponse.php
@@ -17,7 +17,7 @@
 /**
  * CashBackPercentagePriceInfoResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CashBackPriceInfoRequest.php b/src/clients/messaging-api/lib/Model/CashBackPriceInfoRequest.php
index d612c8b1..5faa91af 100644
--- a/src/clients/messaging-api/lib/Model/CashBackPriceInfoRequest.php
+++ b/src/clients/messaging-api/lib/Model/CashBackPriceInfoRequest.php
@@ -17,7 +17,7 @@
 /**
  * CashBackPriceInfoRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CashBackPriceInfoResponse.php b/src/clients/messaging-api/lib/Model/CashBackPriceInfoResponse.php
index 6c28d1cf..a7239b72 100644
--- a/src/clients/messaging-api/lib/Model/CashBackPriceInfoResponse.php
+++ b/src/clients/messaging-api/lib/Model/CashBackPriceInfoResponse.php
@@ -17,7 +17,7 @@
 /**
  * CashBackPriceInfoResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ChatReference.php b/src/clients/messaging-api/lib/Model/ChatReference.php
index dfb6c441..d9d09186 100644
--- a/src/clients/messaging-api/lib/Model/ChatReference.php
+++ b/src/clients/messaging-api/lib/Model/ChatReference.php
@@ -17,7 +17,7 @@
 /**
  * ChatReference
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ClipboardAction.php b/src/clients/messaging-api/lib/Model/ClipboardAction.php
index 28a4187b..218ca352 100644
--- a/src/clients/messaging-api/lib/Model/ClipboardAction.php
+++ b/src/clients/messaging-api/lib/Model/ClipboardAction.php
@@ -17,7 +17,7 @@
 /**
  * ClipboardAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ClipboardImagemapAction.php b/src/clients/messaging-api/lib/Model/ClipboardImagemapAction.php
index 9cc284ff..25f24883 100644
--- a/src/clients/messaging-api/lib/Model/ClipboardImagemapAction.php
+++ b/src/clients/messaging-api/lib/Model/ClipboardImagemapAction.php
@@ -17,7 +17,7 @@
 /**
  * ClipboardImagemapAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ConfirmTemplate.php b/src/clients/messaging-api/lib/Model/ConfirmTemplate.php
index dc524325..53ac78ee 100644
--- a/src/clients/messaging-api/lib/Model/ConfirmTemplate.php
+++ b/src/clients/messaging-api/lib/Model/ConfirmTemplate.php
@@ -17,7 +17,7 @@
 /**
  * ConfirmTemplate
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponCashBackRewardRequest.php b/src/clients/messaging-api/lib/Model/CouponCashBackRewardRequest.php
index 891ed4a9..9fbeaa41 100644
--- a/src/clients/messaging-api/lib/Model/CouponCashBackRewardRequest.php
+++ b/src/clients/messaging-api/lib/Model/CouponCashBackRewardRequest.php
@@ -17,7 +17,7 @@
 /**
  * CouponCashBackRewardRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponCashBackRewardResponse.php b/src/clients/messaging-api/lib/Model/CouponCashBackRewardResponse.php
index 8bff478b..c5e8ac6b 100644
--- a/src/clients/messaging-api/lib/Model/CouponCashBackRewardResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponCashBackRewardResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponCashBackRewardResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponCreateRequest.php b/src/clients/messaging-api/lib/Model/CouponCreateRequest.php
index 7e3920b1..6ac385de 100644
--- a/src/clients/messaging-api/lib/Model/CouponCreateRequest.php
+++ b/src/clients/messaging-api/lib/Model/CouponCreateRequest.php
@@ -17,7 +17,7 @@
 /**
  * CouponCreateRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponCreateResponse.php b/src/clients/messaging-api/lib/Model/CouponCreateResponse.php
index e04b3321..32d0c096 100644
--- a/src/clients/messaging-api/lib/Model/CouponCreateResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponCreateResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponCreateResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponDiscountRewardRequest.php b/src/clients/messaging-api/lib/Model/CouponDiscountRewardRequest.php
index 30c96d10..d45ddb61 100644
--- a/src/clients/messaging-api/lib/Model/CouponDiscountRewardRequest.php
+++ b/src/clients/messaging-api/lib/Model/CouponDiscountRewardRequest.php
@@ -17,7 +17,7 @@
 /**
  * CouponDiscountRewardRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponDiscountRewardResponse.php b/src/clients/messaging-api/lib/Model/CouponDiscountRewardResponse.php
index b7220d95..54d9e34d 100644
--- a/src/clients/messaging-api/lib/Model/CouponDiscountRewardResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponDiscountRewardResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponDiscountRewardResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponFreeRewardRequest.php b/src/clients/messaging-api/lib/Model/CouponFreeRewardRequest.php
index f8533442..3600240e 100644
--- a/src/clients/messaging-api/lib/Model/CouponFreeRewardRequest.php
+++ b/src/clients/messaging-api/lib/Model/CouponFreeRewardRequest.php
@@ -17,7 +17,7 @@
 /**
  * CouponFreeRewardRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponFreeRewardResponse.php b/src/clients/messaging-api/lib/Model/CouponFreeRewardResponse.php
index 909b98d7..d8dd060c 100644
--- a/src/clients/messaging-api/lib/Model/CouponFreeRewardResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponFreeRewardResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponFreeRewardResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponGiftRewardRequest.php b/src/clients/messaging-api/lib/Model/CouponGiftRewardRequest.php
index 0b18b2c4..23abb595 100644
--- a/src/clients/messaging-api/lib/Model/CouponGiftRewardRequest.php
+++ b/src/clients/messaging-api/lib/Model/CouponGiftRewardRequest.php
@@ -17,7 +17,7 @@
 /**
  * CouponGiftRewardRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponGiftRewardResponse.php b/src/clients/messaging-api/lib/Model/CouponGiftRewardResponse.php
index 9f5eec00..5731990c 100644
--- a/src/clients/messaging-api/lib/Model/CouponGiftRewardResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponGiftRewardResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponGiftRewardResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponListResponse.php b/src/clients/messaging-api/lib/Model/CouponListResponse.php
index 7ec91828..7dec3f6b 100644
--- a/src/clients/messaging-api/lib/Model/CouponListResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponListResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponListResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponMessage.php b/src/clients/messaging-api/lib/Model/CouponMessage.php
index 82d6f52b..ebc65576 100644
--- a/src/clients/messaging-api/lib/Model/CouponMessage.php
+++ b/src/clients/messaging-api/lib/Model/CouponMessage.php
@@ -17,7 +17,7 @@
 /**
  * CouponMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponOthersRewardRequest.php b/src/clients/messaging-api/lib/Model/CouponOthersRewardRequest.php
index 118905e2..b9a7d7b3 100644
--- a/src/clients/messaging-api/lib/Model/CouponOthersRewardRequest.php
+++ b/src/clients/messaging-api/lib/Model/CouponOthersRewardRequest.php
@@ -17,7 +17,7 @@
 /**
  * CouponOthersRewardRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponOthersRewardResponse.php b/src/clients/messaging-api/lib/Model/CouponOthersRewardResponse.php
index 73a93c9a..e255bc6a 100644
--- a/src/clients/messaging-api/lib/Model/CouponOthersRewardResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponOthersRewardResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponOthersRewardResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponResponse.php b/src/clients/messaging-api/lib/Model/CouponResponse.php
index 55ac780f..f8118a24 100644
--- a/src/clients/messaging-api/lib/Model/CouponResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponRewardRequest.php b/src/clients/messaging-api/lib/Model/CouponRewardRequest.php
index b63c33bc..daa00caf 100644
--- a/src/clients/messaging-api/lib/Model/CouponRewardRequest.php
+++ b/src/clients/messaging-api/lib/Model/CouponRewardRequest.php
@@ -17,7 +17,7 @@
 /**
  * CouponRewardRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CouponRewardResponse.php b/src/clients/messaging-api/lib/Model/CouponRewardResponse.php
index 996d900e..be6ce6ca 100644
--- a/src/clients/messaging-api/lib/Model/CouponRewardResponse.php
+++ b/src/clients/messaging-api/lib/Model/CouponRewardResponse.php
@@ -17,7 +17,7 @@
 /**
  * CouponRewardResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/CreateRichMenuAliasRequest.php b/src/clients/messaging-api/lib/Model/CreateRichMenuAliasRequest.php
index 1c8be749..1fd3310f 100644
--- a/src/clients/messaging-api/lib/Model/CreateRichMenuAliasRequest.php
+++ b/src/clients/messaging-api/lib/Model/CreateRichMenuAliasRequest.php
@@ -17,7 +17,7 @@
 /**
  * CreateRichMenuAliasRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DatetimePickerAction.php b/src/clients/messaging-api/lib/Model/DatetimePickerAction.php
index 3767a849..5b26f189 100644
--- a/src/clients/messaging-api/lib/Model/DatetimePickerAction.php
+++ b/src/clients/messaging-api/lib/Model/DatetimePickerAction.php
@@ -17,7 +17,7 @@
 /**
  * DatetimePickerAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DemographicFilter.php b/src/clients/messaging-api/lib/Model/DemographicFilter.php
index 04110c69..de269990 100644
--- a/src/clients/messaging-api/lib/Model/DemographicFilter.php
+++ b/src/clients/messaging-api/lib/Model/DemographicFilter.php
@@ -17,7 +17,7 @@
 /**
  * DemographicFilter
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DiscountExplicitPriceInfoRequest.php b/src/clients/messaging-api/lib/Model/DiscountExplicitPriceInfoRequest.php
index 97e11214..066d20f5 100644
--- a/src/clients/messaging-api/lib/Model/DiscountExplicitPriceInfoRequest.php
+++ b/src/clients/messaging-api/lib/Model/DiscountExplicitPriceInfoRequest.php
@@ -17,7 +17,7 @@
 /**
  * DiscountExplicitPriceInfoRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DiscountExplicitPriceInfoResponse.php b/src/clients/messaging-api/lib/Model/DiscountExplicitPriceInfoResponse.php
index 6ee96821..209555b3 100644
--- a/src/clients/messaging-api/lib/Model/DiscountExplicitPriceInfoResponse.php
+++ b/src/clients/messaging-api/lib/Model/DiscountExplicitPriceInfoResponse.php
@@ -17,7 +17,7 @@
 /**
  * DiscountExplicitPriceInfoResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DiscountFixedPriceInfoRequest.php b/src/clients/messaging-api/lib/Model/DiscountFixedPriceInfoRequest.php
index e2976918..e4675937 100644
--- a/src/clients/messaging-api/lib/Model/DiscountFixedPriceInfoRequest.php
+++ b/src/clients/messaging-api/lib/Model/DiscountFixedPriceInfoRequest.php
@@ -17,7 +17,7 @@
 /**
  * DiscountFixedPriceInfoRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DiscountFixedPriceInfoResponse.php b/src/clients/messaging-api/lib/Model/DiscountFixedPriceInfoResponse.php
index 7b0c0abf..5e70047a 100644
--- a/src/clients/messaging-api/lib/Model/DiscountFixedPriceInfoResponse.php
+++ b/src/clients/messaging-api/lib/Model/DiscountFixedPriceInfoResponse.php
@@ -17,7 +17,7 @@
 /**
  * DiscountFixedPriceInfoResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DiscountPercentagePriceInfoRequest.php b/src/clients/messaging-api/lib/Model/DiscountPercentagePriceInfoRequest.php
index 554010db..317a3499 100644
--- a/src/clients/messaging-api/lib/Model/DiscountPercentagePriceInfoRequest.php
+++ b/src/clients/messaging-api/lib/Model/DiscountPercentagePriceInfoRequest.php
@@ -17,7 +17,7 @@
 /**
  * DiscountPercentagePriceInfoRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DiscountPercentagePriceInfoResponse.php b/src/clients/messaging-api/lib/Model/DiscountPercentagePriceInfoResponse.php
index 24fb285a..970bfd06 100644
--- a/src/clients/messaging-api/lib/Model/DiscountPercentagePriceInfoResponse.php
+++ b/src/clients/messaging-api/lib/Model/DiscountPercentagePriceInfoResponse.php
@@ -17,7 +17,7 @@
 /**
  * DiscountPercentagePriceInfoResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DiscountPriceInfoRequest.php b/src/clients/messaging-api/lib/Model/DiscountPriceInfoRequest.php
index 1cfcd750..9f42157e 100644
--- a/src/clients/messaging-api/lib/Model/DiscountPriceInfoRequest.php
+++ b/src/clients/messaging-api/lib/Model/DiscountPriceInfoRequest.php
@@ -17,7 +17,7 @@
 /**
  * DiscountPriceInfoRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/DiscountPriceInfoResponse.php b/src/clients/messaging-api/lib/Model/DiscountPriceInfoResponse.php
index 81655a5f..029d8f9a 100644
--- a/src/clients/messaging-api/lib/Model/DiscountPriceInfoResponse.php
+++ b/src/clients/messaging-api/lib/Model/DiscountPriceInfoResponse.php
@@ -17,7 +17,7 @@
 /**
  * DiscountPriceInfoResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Emoji.php b/src/clients/messaging-api/lib/Model/Emoji.php
index 2d654026..29d7bc26 100644
--- a/src/clients/messaging-api/lib/Model/Emoji.php
+++ b/src/clients/messaging-api/lib/Model/Emoji.php
@@ -17,7 +17,7 @@
 /**
  * Emoji
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/EmojiSubstitutionObject.php b/src/clients/messaging-api/lib/Model/EmojiSubstitutionObject.php
index 8680382e..c381e4d4 100644
--- a/src/clients/messaging-api/lib/Model/EmojiSubstitutionObject.php
+++ b/src/clients/messaging-api/lib/Model/EmojiSubstitutionObject.php
@@ -17,7 +17,7 @@
 /**
  * EmojiSubstitutionObject
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ErrorDetail.php b/src/clients/messaging-api/lib/Model/ErrorDetail.php
index 6168b889..2bb7923b 100644
--- a/src/clients/messaging-api/lib/Model/ErrorDetail.php
+++ b/src/clients/messaging-api/lib/Model/ErrorDetail.php
@@ -17,7 +17,7 @@
 /**
  * ErrorDetail
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ErrorResponse.php b/src/clients/messaging-api/lib/Model/ErrorResponse.php
index d598f592..d934ae74 100644
--- a/src/clients/messaging-api/lib/Model/ErrorResponse.php
+++ b/src/clients/messaging-api/lib/Model/ErrorResponse.php
@@ -17,7 +17,7 @@
 /**
  * ErrorResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Filter.php b/src/clients/messaging-api/lib/Model/Filter.php
index b8c3171c..89daf2d0 100644
--- a/src/clients/messaging-api/lib/Model/Filter.php
+++ b/src/clients/messaging-api/lib/Model/Filter.php
@@ -17,7 +17,7 @@
 /**
  * Filter
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBlockStyle.php b/src/clients/messaging-api/lib/Model/FlexBlockStyle.php
index f6771e1c..4a1619d7 100644
--- a/src/clients/messaging-api/lib/Model/FlexBlockStyle.php
+++ b/src/clients/messaging-api/lib/Model/FlexBlockStyle.php
@@ -17,7 +17,7 @@
 /**
  * FlexBlockStyle
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBox.php b/src/clients/messaging-api/lib/Model/FlexBox.php
index b496f626..badca4f3 100644
--- a/src/clients/messaging-api/lib/Model/FlexBox.php
+++ b/src/clients/messaging-api/lib/Model/FlexBox.php
@@ -17,7 +17,7 @@
 /**
  * FlexBox
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBoxBackground.php b/src/clients/messaging-api/lib/Model/FlexBoxBackground.php
index bb79b375..978f16ce 100644
--- a/src/clients/messaging-api/lib/Model/FlexBoxBackground.php
+++ b/src/clients/messaging-api/lib/Model/FlexBoxBackground.php
@@ -17,7 +17,7 @@
 /**
  * FlexBoxBackground
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBoxBorderWidth.php b/src/clients/messaging-api/lib/Model/FlexBoxBorderWidth.php
index a96d83c3..55507aee 100644
--- a/src/clients/messaging-api/lib/Model/FlexBoxBorderWidth.php
+++ b/src/clients/messaging-api/lib/Model/FlexBoxBorderWidth.php
@@ -17,7 +17,7 @@
 /**
  * FlexBoxBorderWidth
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBoxCornerRadius.php b/src/clients/messaging-api/lib/Model/FlexBoxCornerRadius.php
index 97a73f18..580d08e5 100644
--- a/src/clients/messaging-api/lib/Model/FlexBoxCornerRadius.php
+++ b/src/clients/messaging-api/lib/Model/FlexBoxCornerRadius.php
@@ -17,7 +17,7 @@
 /**
  * FlexBoxCornerRadius
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBoxLinearGradient.php b/src/clients/messaging-api/lib/Model/FlexBoxLinearGradient.php
index 891597e8..2b0c3a28 100644
--- a/src/clients/messaging-api/lib/Model/FlexBoxLinearGradient.php
+++ b/src/clients/messaging-api/lib/Model/FlexBoxLinearGradient.php
@@ -17,7 +17,7 @@
 /**
  * FlexBoxLinearGradient
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBoxPadding.php b/src/clients/messaging-api/lib/Model/FlexBoxPadding.php
index fe300179..90b0a86d 100644
--- a/src/clients/messaging-api/lib/Model/FlexBoxPadding.php
+++ b/src/clients/messaging-api/lib/Model/FlexBoxPadding.php
@@ -17,7 +17,7 @@
 /**
  * FlexBoxPadding
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBoxSpacing.php b/src/clients/messaging-api/lib/Model/FlexBoxSpacing.php
index 35909ca6..cdce6aaf 100644
--- a/src/clients/messaging-api/lib/Model/FlexBoxSpacing.php
+++ b/src/clients/messaging-api/lib/Model/FlexBoxSpacing.php
@@ -17,7 +17,7 @@
 /**
  * FlexBoxSpacing
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBubble.php b/src/clients/messaging-api/lib/Model/FlexBubble.php
index 5bfdf03c..6e3c53fc 100644
--- a/src/clients/messaging-api/lib/Model/FlexBubble.php
+++ b/src/clients/messaging-api/lib/Model/FlexBubble.php
@@ -17,7 +17,7 @@
 /**
  * FlexBubble
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexBubbleStyles.php b/src/clients/messaging-api/lib/Model/FlexBubbleStyles.php
index 66ad7b5e..25922f1d 100644
--- a/src/clients/messaging-api/lib/Model/FlexBubbleStyles.php
+++ b/src/clients/messaging-api/lib/Model/FlexBubbleStyles.php
@@ -17,7 +17,7 @@
 /**
  * FlexBubbleStyles
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexButton.php b/src/clients/messaging-api/lib/Model/FlexButton.php
index 8d0064b5..1b1520bb 100644
--- a/src/clients/messaging-api/lib/Model/FlexButton.php
+++ b/src/clients/messaging-api/lib/Model/FlexButton.php
@@ -17,7 +17,7 @@
 /**
  * FlexButton
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexCarousel.php b/src/clients/messaging-api/lib/Model/FlexCarousel.php
index e4793e59..251a8d33 100644
--- a/src/clients/messaging-api/lib/Model/FlexCarousel.php
+++ b/src/clients/messaging-api/lib/Model/FlexCarousel.php
@@ -17,7 +17,7 @@
 /**
  * FlexCarousel
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexComponent.php b/src/clients/messaging-api/lib/Model/FlexComponent.php
index 1c21cf20..1149cb8a 100644
--- a/src/clients/messaging-api/lib/Model/FlexComponent.php
+++ b/src/clients/messaging-api/lib/Model/FlexComponent.php
@@ -17,7 +17,7 @@
 /**
  * FlexComponent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexContainer.php b/src/clients/messaging-api/lib/Model/FlexContainer.php
index 6fc1fbfb..aceab315 100644
--- a/src/clients/messaging-api/lib/Model/FlexContainer.php
+++ b/src/clients/messaging-api/lib/Model/FlexContainer.php
@@ -17,7 +17,7 @@
 /**
  * FlexContainer
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexFiller.php b/src/clients/messaging-api/lib/Model/FlexFiller.php
index 5f5fda25..39d2f515 100644
--- a/src/clients/messaging-api/lib/Model/FlexFiller.php
+++ b/src/clients/messaging-api/lib/Model/FlexFiller.php
@@ -17,7 +17,7 @@
 /**
  * FlexFiller
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexIcon.php b/src/clients/messaging-api/lib/Model/FlexIcon.php
index 60689fd5..1e7fef95 100644
--- a/src/clients/messaging-api/lib/Model/FlexIcon.php
+++ b/src/clients/messaging-api/lib/Model/FlexIcon.php
@@ -17,7 +17,7 @@
 /**
  * FlexIcon
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexIconSize.php b/src/clients/messaging-api/lib/Model/FlexIconSize.php
index 5f04e079..fbd7376a 100644
--- a/src/clients/messaging-api/lib/Model/FlexIconSize.php
+++ b/src/clients/messaging-api/lib/Model/FlexIconSize.php
@@ -17,7 +17,7 @@
 /**
  * FlexIconSize
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexImage.php b/src/clients/messaging-api/lib/Model/FlexImage.php
index aec4779b..efc31a6f 100644
--- a/src/clients/messaging-api/lib/Model/FlexImage.php
+++ b/src/clients/messaging-api/lib/Model/FlexImage.php
@@ -17,7 +17,7 @@
 /**
  * FlexImage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexImageSize.php b/src/clients/messaging-api/lib/Model/FlexImageSize.php
index a9196906..a12f49a5 100644
--- a/src/clients/messaging-api/lib/Model/FlexImageSize.php
+++ b/src/clients/messaging-api/lib/Model/FlexImageSize.php
@@ -17,7 +17,7 @@
 /**
  * FlexImageSize
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexMargin.php b/src/clients/messaging-api/lib/Model/FlexMargin.php
index 7a60de67..57228ea2 100644
--- a/src/clients/messaging-api/lib/Model/FlexMargin.php
+++ b/src/clients/messaging-api/lib/Model/FlexMargin.php
@@ -17,7 +17,7 @@
 /**
  * FlexMargin
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexMessage.php b/src/clients/messaging-api/lib/Model/FlexMessage.php
index 547ff025..c922a8fd 100644
--- a/src/clients/messaging-api/lib/Model/FlexMessage.php
+++ b/src/clients/messaging-api/lib/Model/FlexMessage.php
@@ -17,7 +17,7 @@
 /**
  * FlexMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexOffset.php b/src/clients/messaging-api/lib/Model/FlexOffset.php
index 1fa46f4f..06d336b8 100644
--- a/src/clients/messaging-api/lib/Model/FlexOffset.php
+++ b/src/clients/messaging-api/lib/Model/FlexOffset.php
@@ -17,7 +17,7 @@
 /**
  * FlexOffset
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexSeparator.php b/src/clients/messaging-api/lib/Model/FlexSeparator.php
index b49fe114..c4ccccd6 100644
--- a/src/clients/messaging-api/lib/Model/FlexSeparator.php
+++ b/src/clients/messaging-api/lib/Model/FlexSeparator.php
@@ -17,7 +17,7 @@
 /**
  * FlexSeparator
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexSpan.php b/src/clients/messaging-api/lib/Model/FlexSpan.php
index c9c095da..c6628ea3 100644
--- a/src/clients/messaging-api/lib/Model/FlexSpan.php
+++ b/src/clients/messaging-api/lib/Model/FlexSpan.php
@@ -17,7 +17,7 @@
 /**
  * FlexSpan
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexSpanSize.php b/src/clients/messaging-api/lib/Model/FlexSpanSize.php
index c7b984a1..b66d6a61 100644
--- a/src/clients/messaging-api/lib/Model/FlexSpanSize.php
+++ b/src/clients/messaging-api/lib/Model/FlexSpanSize.php
@@ -17,7 +17,7 @@
 /**
  * FlexSpanSize
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexText.php b/src/clients/messaging-api/lib/Model/FlexText.php
index 10efd10a..28e14feb 100644
--- a/src/clients/messaging-api/lib/Model/FlexText.php
+++ b/src/clients/messaging-api/lib/Model/FlexText.php
@@ -17,7 +17,7 @@
 /**
  * FlexText
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexTextFontSize.php b/src/clients/messaging-api/lib/Model/FlexTextFontSize.php
index 69f15519..3bbc03af 100644
--- a/src/clients/messaging-api/lib/Model/FlexTextFontSize.php
+++ b/src/clients/messaging-api/lib/Model/FlexTextFontSize.php
@@ -17,7 +17,7 @@
 /**
  * FlexTextFontSize
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/FlexVideo.php b/src/clients/messaging-api/lib/Model/FlexVideo.php
index 448f2b2f..8f86bb68 100644
--- a/src/clients/messaging-api/lib/Model/FlexVideo.php
+++ b/src/clients/messaging-api/lib/Model/FlexVideo.php
@@ -17,7 +17,7 @@
 /**
  * FlexVideo
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GenderDemographic.php b/src/clients/messaging-api/lib/Model/GenderDemographic.php
index 97a624b7..e00372ea 100644
--- a/src/clients/messaging-api/lib/Model/GenderDemographic.php
+++ b/src/clients/messaging-api/lib/Model/GenderDemographic.php
@@ -17,7 +17,7 @@
 /**
  * GenderDemographic
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GenderDemographicFilter.php b/src/clients/messaging-api/lib/Model/GenderDemographicFilter.php
index 32449ba8..62de6058 100644
--- a/src/clients/messaging-api/lib/Model/GenderDemographicFilter.php
+++ b/src/clients/messaging-api/lib/Model/GenderDemographicFilter.php
@@ -17,7 +17,7 @@
 /**
  * GenderDemographicFilter
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GetAggregationUnitNameListResponse.php b/src/clients/messaging-api/lib/Model/GetAggregationUnitNameListResponse.php
index 5d5a6786..c1ba904d 100644
--- a/src/clients/messaging-api/lib/Model/GetAggregationUnitNameListResponse.php
+++ b/src/clients/messaging-api/lib/Model/GetAggregationUnitNameListResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetAggregationUnitNameListResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GetAggregationUnitUsageResponse.php b/src/clients/messaging-api/lib/Model/GetAggregationUnitUsageResponse.php
index ae9a7f2e..04f929c2 100644
--- a/src/clients/messaging-api/lib/Model/GetAggregationUnitUsageResponse.php
+++ b/src/clients/messaging-api/lib/Model/GetAggregationUnitUsageResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetAggregationUnitUsageResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GetFollowersResponse.php b/src/clients/messaging-api/lib/Model/GetFollowersResponse.php
index d81f1aab..8fd34a6a 100644
--- a/src/clients/messaging-api/lib/Model/GetFollowersResponse.php
+++ b/src/clients/messaging-api/lib/Model/GetFollowersResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetFollowersResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GetJoinedMembershipUsersResponse.php b/src/clients/messaging-api/lib/Model/GetJoinedMembershipUsersResponse.php
index fc603d07..238014b1 100644
--- a/src/clients/messaging-api/lib/Model/GetJoinedMembershipUsersResponse.php
+++ b/src/clients/messaging-api/lib/Model/GetJoinedMembershipUsersResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetJoinedMembershipUsersResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GetMembershipSubscriptionResponse.php b/src/clients/messaging-api/lib/Model/GetMembershipSubscriptionResponse.php
index 75e4790c..7ab35682 100644
--- a/src/clients/messaging-api/lib/Model/GetMembershipSubscriptionResponse.php
+++ b/src/clients/messaging-api/lib/Model/GetMembershipSubscriptionResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetMembershipSubscriptionResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GetMessageContentTranscodingResponse.php b/src/clients/messaging-api/lib/Model/GetMessageContentTranscodingResponse.php
index ce840a73..0c91776f 100644
--- a/src/clients/messaging-api/lib/Model/GetMessageContentTranscodingResponse.php
+++ b/src/clients/messaging-api/lib/Model/GetMessageContentTranscodingResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetMessageContentTranscodingResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GetWebhookEndpointResponse.php b/src/clients/messaging-api/lib/Model/GetWebhookEndpointResponse.php
index 603ffd03..89044d3c 100644
--- a/src/clients/messaging-api/lib/Model/GetWebhookEndpointResponse.php
+++ b/src/clients/messaging-api/lib/Model/GetWebhookEndpointResponse.php
@@ -17,7 +17,7 @@
 /**
  * GetWebhookEndpointResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GroupMemberCountResponse.php b/src/clients/messaging-api/lib/Model/GroupMemberCountResponse.php
index ea8ed409..a78233eb 100644
--- a/src/clients/messaging-api/lib/Model/GroupMemberCountResponse.php
+++ b/src/clients/messaging-api/lib/Model/GroupMemberCountResponse.php
@@ -17,7 +17,7 @@
 /**
  * GroupMemberCountResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GroupSummaryResponse.php b/src/clients/messaging-api/lib/Model/GroupSummaryResponse.php
index 85f276eb..4c69002c 100644
--- a/src/clients/messaging-api/lib/Model/GroupSummaryResponse.php
+++ b/src/clients/messaging-api/lib/Model/GroupSummaryResponse.php
@@ -17,7 +17,7 @@
 /**
  * GroupSummaryResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/GroupUserProfileResponse.php b/src/clients/messaging-api/lib/Model/GroupUserProfileResponse.php
index 4108454c..5598d896 100644
--- a/src/clients/messaging-api/lib/Model/GroupUserProfileResponse.php
+++ b/src/clients/messaging-api/lib/Model/GroupUserProfileResponse.php
@@ -17,7 +17,7 @@
 /**
  * GroupUserProfileResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImageCarouselColumn.php b/src/clients/messaging-api/lib/Model/ImageCarouselColumn.php
index 23f93211..27e864a2 100644
--- a/src/clients/messaging-api/lib/Model/ImageCarouselColumn.php
+++ b/src/clients/messaging-api/lib/Model/ImageCarouselColumn.php
@@ -17,7 +17,7 @@
 /**
  * ImageCarouselColumn
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImageCarouselTemplate.php b/src/clients/messaging-api/lib/Model/ImageCarouselTemplate.php
index 73a385a5..62e9814d 100644
--- a/src/clients/messaging-api/lib/Model/ImageCarouselTemplate.php
+++ b/src/clients/messaging-api/lib/Model/ImageCarouselTemplate.php
@@ -17,7 +17,7 @@
 /**
  * ImageCarouselTemplate
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImageMessage.php b/src/clients/messaging-api/lib/Model/ImageMessage.php
index 9128e6a0..9e98e5ab 100644
--- a/src/clients/messaging-api/lib/Model/ImageMessage.php
+++ b/src/clients/messaging-api/lib/Model/ImageMessage.php
@@ -17,7 +17,7 @@
 /**
  * ImageMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImagemapAction.php b/src/clients/messaging-api/lib/Model/ImagemapAction.php
index 4a0f7397..4e612ec8 100644
--- a/src/clients/messaging-api/lib/Model/ImagemapAction.php
+++ b/src/clients/messaging-api/lib/Model/ImagemapAction.php
@@ -17,7 +17,7 @@
 /**
  * ImagemapAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImagemapArea.php b/src/clients/messaging-api/lib/Model/ImagemapArea.php
index dd2d8251..4e7ac1e4 100644
--- a/src/clients/messaging-api/lib/Model/ImagemapArea.php
+++ b/src/clients/messaging-api/lib/Model/ImagemapArea.php
@@ -17,7 +17,7 @@
 /**
  * ImagemapArea
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImagemapBaseSize.php b/src/clients/messaging-api/lib/Model/ImagemapBaseSize.php
index 8e90f43b..32e8fbd2 100644
--- a/src/clients/messaging-api/lib/Model/ImagemapBaseSize.php
+++ b/src/clients/messaging-api/lib/Model/ImagemapBaseSize.php
@@ -17,7 +17,7 @@
 /**
  * ImagemapBaseSize
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImagemapExternalLink.php b/src/clients/messaging-api/lib/Model/ImagemapExternalLink.php
index 513d6b3b..f8f5d33f 100644
--- a/src/clients/messaging-api/lib/Model/ImagemapExternalLink.php
+++ b/src/clients/messaging-api/lib/Model/ImagemapExternalLink.php
@@ -17,7 +17,7 @@
 /**
  * ImagemapExternalLink
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImagemapMessage.php b/src/clients/messaging-api/lib/Model/ImagemapMessage.php
index 9e26cf1f..085dcc00 100644
--- a/src/clients/messaging-api/lib/Model/ImagemapMessage.php
+++ b/src/clients/messaging-api/lib/Model/ImagemapMessage.php
@@ -17,7 +17,7 @@
 /**
  * ImagemapMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ImagemapVideo.php b/src/clients/messaging-api/lib/Model/ImagemapVideo.php
index 263a875f..18975b26 100644
--- a/src/clients/messaging-api/lib/Model/ImagemapVideo.php
+++ b/src/clients/messaging-api/lib/Model/ImagemapVideo.php
@@ -17,7 +17,7 @@
 /**
  * ImagemapVideo
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/IssueLinkTokenResponse.php b/src/clients/messaging-api/lib/Model/IssueLinkTokenResponse.php
index 8bce73bb..582c1adc 100644
--- a/src/clients/messaging-api/lib/Model/IssueLinkTokenResponse.php
+++ b/src/clients/messaging-api/lib/Model/IssueLinkTokenResponse.php
@@ -17,7 +17,7 @@
 /**
  * IssueLinkTokenResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Limit.php b/src/clients/messaging-api/lib/Model/Limit.php
index 56652876..5e1a42bc 100644
--- a/src/clients/messaging-api/lib/Model/Limit.php
+++ b/src/clients/messaging-api/lib/Model/Limit.php
@@ -17,7 +17,7 @@
 /**
  * Limit
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/LocationAction.php b/src/clients/messaging-api/lib/Model/LocationAction.php
index 76e0cdf1..6f98b00a 100644
--- a/src/clients/messaging-api/lib/Model/LocationAction.php
+++ b/src/clients/messaging-api/lib/Model/LocationAction.php
@@ -17,7 +17,7 @@
 /**
  * LocationAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/LocationMessage.php b/src/clients/messaging-api/lib/Model/LocationMessage.php
index 9fb37ceb..79cc88a2 100644
--- a/src/clients/messaging-api/lib/Model/LocationMessage.php
+++ b/src/clients/messaging-api/lib/Model/LocationMessage.php
@@ -17,7 +17,7 @@
 /**
  * LocationMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/LotteryAcquisitionConditionRequest.php b/src/clients/messaging-api/lib/Model/LotteryAcquisitionConditionRequest.php
index 70f645a3..c663a7c3 100644
--- a/src/clients/messaging-api/lib/Model/LotteryAcquisitionConditionRequest.php
+++ b/src/clients/messaging-api/lib/Model/LotteryAcquisitionConditionRequest.php
@@ -17,7 +17,7 @@
 /**
  * LotteryAcquisitionConditionRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/LotteryAcquisitionConditionResponse.php b/src/clients/messaging-api/lib/Model/LotteryAcquisitionConditionResponse.php
index 27ebeb45..1f886dda 100644
--- a/src/clients/messaging-api/lib/Model/LotteryAcquisitionConditionResponse.php
+++ b/src/clients/messaging-api/lib/Model/LotteryAcquisitionConditionResponse.php
@@ -17,7 +17,7 @@
 /**
  * LotteryAcquisitionConditionResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MarkMessagesAsReadByTokenRequest.php b/src/clients/messaging-api/lib/Model/MarkMessagesAsReadByTokenRequest.php
index ad886d8e..78c81fc3 100644
--- a/src/clients/messaging-api/lib/Model/MarkMessagesAsReadByTokenRequest.php
+++ b/src/clients/messaging-api/lib/Model/MarkMessagesAsReadByTokenRequest.php
@@ -17,7 +17,7 @@
 /**
  * MarkMessagesAsReadByTokenRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MarkMessagesAsReadRequest.php b/src/clients/messaging-api/lib/Model/MarkMessagesAsReadRequest.php
index f4062d5a..de6dd6f9 100644
--- a/src/clients/messaging-api/lib/Model/MarkMessagesAsReadRequest.php
+++ b/src/clients/messaging-api/lib/Model/MarkMessagesAsReadRequest.php
@@ -17,7 +17,7 @@
 /**
  * MarkMessagesAsReadRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MembersIdsResponse.php b/src/clients/messaging-api/lib/Model/MembersIdsResponse.php
index 05ff999b..1233b303 100644
--- a/src/clients/messaging-api/lib/Model/MembersIdsResponse.php
+++ b/src/clients/messaging-api/lib/Model/MembersIdsResponse.php
@@ -17,7 +17,7 @@
 /**
  * MembersIdsResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Membership.php b/src/clients/messaging-api/lib/Model/Membership.php
index e83143f8..a284b951 100644
--- a/src/clients/messaging-api/lib/Model/Membership.php
+++ b/src/clients/messaging-api/lib/Model/Membership.php
@@ -17,7 +17,7 @@
 /**
  * Membership
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MembershipListResponse.php b/src/clients/messaging-api/lib/Model/MembershipListResponse.php
index 4cdc3382..bf579692 100644
--- a/src/clients/messaging-api/lib/Model/MembershipListResponse.php
+++ b/src/clients/messaging-api/lib/Model/MembershipListResponse.php
@@ -17,7 +17,7 @@
 /**
  * MembershipListResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MentionSubstitutionObject.php b/src/clients/messaging-api/lib/Model/MentionSubstitutionObject.php
index 711fde37..177956e4 100644
--- a/src/clients/messaging-api/lib/Model/MentionSubstitutionObject.php
+++ b/src/clients/messaging-api/lib/Model/MentionSubstitutionObject.php
@@ -17,7 +17,7 @@
 /**
  * MentionSubstitutionObject
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MentionTarget.php b/src/clients/messaging-api/lib/Model/MentionTarget.php
index 31383769..3eeb731b 100644
--- a/src/clients/messaging-api/lib/Model/MentionTarget.php
+++ b/src/clients/messaging-api/lib/Model/MentionTarget.php
@@ -17,7 +17,7 @@
 /**
  * MentionTarget
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Message.php b/src/clients/messaging-api/lib/Model/Message.php
index 52ab09fb..d01e472d 100644
--- a/src/clients/messaging-api/lib/Model/Message.php
+++ b/src/clients/messaging-api/lib/Model/Message.php
@@ -17,7 +17,7 @@
 /**
  * Message
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MessageAction.php b/src/clients/messaging-api/lib/Model/MessageAction.php
index 0443760a..5e38882b 100644
--- a/src/clients/messaging-api/lib/Model/MessageAction.php
+++ b/src/clients/messaging-api/lib/Model/MessageAction.php
@@ -17,7 +17,7 @@
 /**
  * MessageAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MessageImagemapAction.php b/src/clients/messaging-api/lib/Model/MessageImagemapAction.php
index 67d8ab78..19d80452 100644
--- a/src/clients/messaging-api/lib/Model/MessageImagemapAction.php
+++ b/src/clients/messaging-api/lib/Model/MessageImagemapAction.php
@@ -17,7 +17,7 @@
 /**
  * MessageImagemapAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MessageQuotaResponse.php b/src/clients/messaging-api/lib/Model/MessageQuotaResponse.php
index e8a6d798..588e42c1 100644
--- a/src/clients/messaging-api/lib/Model/MessageQuotaResponse.php
+++ b/src/clients/messaging-api/lib/Model/MessageQuotaResponse.php
@@ -17,7 +17,7 @@
 /**
  * MessageQuotaResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MessagingApiPagerCouponListResponse.php b/src/clients/messaging-api/lib/Model/MessagingApiPagerCouponListResponse.php
index 68004908..c7bccef7 100644
--- a/src/clients/messaging-api/lib/Model/MessagingApiPagerCouponListResponse.php
+++ b/src/clients/messaging-api/lib/Model/MessagingApiPagerCouponListResponse.php
@@ -17,7 +17,7 @@
 /**
  * MessagingApiPagerCouponListResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ModelInterface.php b/src/clients/messaging-api/lib/Model/ModelInterface.php
index c3bfaa24..68827061 100644
--- a/src/clients/messaging-api/lib/Model/ModelInterface.php
+++ b/src/clients/messaging-api/lib/Model/ModelInterface.php
@@ -17,7 +17,7 @@
 /**
  * ModelInterface
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi\Model
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/MulticastRequest.php b/src/clients/messaging-api/lib/Model/MulticastRequest.php
index d8fc6037..1c661810 100644
--- a/src/clients/messaging-api/lib/Model/MulticastRequest.php
+++ b/src/clients/messaging-api/lib/Model/MulticastRequest.php
@@ -17,7 +17,7 @@
 /**
  * MulticastRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/NarrowcastProgressResponse.php b/src/clients/messaging-api/lib/Model/NarrowcastProgressResponse.php
index f395d226..9464fa95 100644
--- a/src/clients/messaging-api/lib/Model/NarrowcastProgressResponse.php
+++ b/src/clients/messaging-api/lib/Model/NarrowcastProgressResponse.php
@@ -17,7 +17,7 @@
 /**
  * NarrowcastProgressResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/NarrowcastRequest.php b/src/clients/messaging-api/lib/Model/NarrowcastRequest.php
index 2348ec22..15ed07aa 100644
--- a/src/clients/messaging-api/lib/Model/NarrowcastRequest.php
+++ b/src/clients/messaging-api/lib/Model/NarrowcastRequest.php
@@ -17,7 +17,7 @@
 /**
  * NarrowcastRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/NormalAcquisitionConditionRequest.php b/src/clients/messaging-api/lib/Model/NormalAcquisitionConditionRequest.php
index 0f6b0979..4f134958 100644
--- a/src/clients/messaging-api/lib/Model/NormalAcquisitionConditionRequest.php
+++ b/src/clients/messaging-api/lib/Model/NormalAcquisitionConditionRequest.php
@@ -17,7 +17,7 @@
 /**
  * NormalAcquisitionConditionRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/NormalAcquisitionConditionResponse.php b/src/clients/messaging-api/lib/Model/NormalAcquisitionConditionResponse.php
index 2b515573..21bfa9e8 100644
--- a/src/clients/messaging-api/lib/Model/NormalAcquisitionConditionResponse.php
+++ b/src/clients/messaging-api/lib/Model/NormalAcquisitionConditionResponse.php
@@ -17,7 +17,7 @@
 /**
  * NormalAcquisitionConditionResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/NumberOfMessagesResponse.php b/src/clients/messaging-api/lib/Model/NumberOfMessagesResponse.php
index e4413cec..989c5eca 100644
--- a/src/clients/messaging-api/lib/Model/NumberOfMessagesResponse.php
+++ b/src/clients/messaging-api/lib/Model/NumberOfMessagesResponse.php
@@ -17,7 +17,7 @@
 /**
  * NumberOfMessagesResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/OperatorDemographicFilter.php b/src/clients/messaging-api/lib/Model/OperatorDemographicFilter.php
index d23f509b..2dd10cba 100644
--- a/src/clients/messaging-api/lib/Model/OperatorDemographicFilter.php
+++ b/src/clients/messaging-api/lib/Model/OperatorDemographicFilter.php
@@ -17,7 +17,7 @@
 /**
  * OperatorDemographicFilter
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/OperatorRecipient.php b/src/clients/messaging-api/lib/Model/OperatorRecipient.php
index 559f6688..b8d6dac0 100644
--- a/src/clients/messaging-api/lib/Model/OperatorRecipient.php
+++ b/src/clients/messaging-api/lib/Model/OperatorRecipient.php
@@ -17,7 +17,7 @@
 /**
  * OperatorRecipient
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/PnpMessagesRequest.php b/src/clients/messaging-api/lib/Model/PnpMessagesRequest.php
index 39e6ee20..9dec026f 100644
--- a/src/clients/messaging-api/lib/Model/PnpMessagesRequest.php
+++ b/src/clients/messaging-api/lib/Model/PnpMessagesRequest.php
@@ -17,7 +17,7 @@
 /**
  * PnpMessagesRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/PostbackAction.php b/src/clients/messaging-api/lib/Model/PostbackAction.php
index fb338466..25b53ddc 100644
--- a/src/clients/messaging-api/lib/Model/PostbackAction.php
+++ b/src/clients/messaging-api/lib/Model/PostbackAction.php
@@ -17,7 +17,7 @@
 /**
  * PostbackAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/PushMessageRequest.php b/src/clients/messaging-api/lib/Model/PushMessageRequest.php
index 9a2e3622..e95e8a37 100644
--- a/src/clients/messaging-api/lib/Model/PushMessageRequest.php
+++ b/src/clients/messaging-api/lib/Model/PushMessageRequest.php
@@ -17,7 +17,7 @@
 /**
  * PushMessageRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/PushMessageResponse.php b/src/clients/messaging-api/lib/Model/PushMessageResponse.php
index 122353d7..e7c4db80 100644
--- a/src/clients/messaging-api/lib/Model/PushMessageResponse.php
+++ b/src/clients/messaging-api/lib/Model/PushMessageResponse.php
@@ -17,7 +17,7 @@
 /**
  * PushMessageResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/QuickReply.php b/src/clients/messaging-api/lib/Model/QuickReply.php
index 1e4f50e6..aaf03d8c 100644
--- a/src/clients/messaging-api/lib/Model/QuickReply.php
+++ b/src/clients/messaging-api/lib/Model/QuickReply.php
@@ -17,7 +17,7 @@
 /**
  * QuickReply
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/QuickReplyItem.php b/src/clients/messaging-api/lib/Model/QuickReplyItem.php
index f0ebb5c3..51633fcb 100644
--- a/src/clients/messaging-api/lib/Model/QuickReplyItem.php
+++ b/src/clients/messaging-api/lib/Model/QuickReplyItem.php
@@ -17,7 +17,7 @@
 /**
  * QuickReplyItem
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/QuotaConsumptionResponse.php b/src/clients/messaging-api/lib/Model/QuotaConsumptionResponse.php
index fad2e7bf..3ed24e79 100644
--- a/src/clients/messaging-api/lib/Model/QuotaConsumptionResponse.php
+++ b/src/clients/messaging-api/lib/Model/QuotaConsumptionResponse.php
@@ -17,7 +17,7 @@
 /**
  * QuotaConsumptionResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/QuotaType.php b/src/clients/messaging-api/lib/Model/QuotaType.php
index 3eeea37c..96d9c421 100644
--- a/src/clients/messaging-api/lib/Model/QuotaType.php
+++ b/src/clients/messaging-api/lib/Model/QuotaType.php
@@ -17,7 +17,7 @@
 /**
  * QuotaType
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Recipient.php b/src/clients/messaging-api/lib/Model/Recipient.php
index f6d923cd..629fd5a8 100644
--- a/src/clients/messaging-api/lib/Model/Recipient.php
+++ b/src/clients/messaging-api/lib/Model/Recipient.php
@@ -17,7 +17,7 @@
 /**
  * Recipient
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RedeliveryRecipient.php b/src/clients/messaging-api/lib/Model/RedeliveryRecipient.php
index 15e398ee..e30f7076 100644
--- a/src/clients/messaging-api/lib/Model/RedeliveryRecipient.php
+++ b/src/clients/messaging-api/lib/Model/RedeliveryRecipient.php
@@ -17,7 +17,7 @@
 /**
  * RedeliveryRecipient
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ReferralAcquisitionConditionResponse.php b/src/clients/messaging-api/lib/Model/ReferralAcquisitionConditionResponse.php
index ec562fb0..5205599d 100644
--- a/src/clients/messaging-api/lib/Model/ReferralAcquisitionConditionResponse.php
+++ b/src/clients/messaging-api/lib/Model/ReferralAcquisitionConditionResponse.php
@@ -17,7 +17,7 @@
 /**
  * ReferralAcquisitionConditionResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ReplyMessageRequest.php b/src/clients/messaging-api/lib/Model/ReplyMessageRequest.php
index d0ae82e2..57b448b5 100644
--- a/src/clients/messaging-api/lib/Model/ReplyMessageRequest.php
+++ b/src/clients/messaging-api/lib/Model/ReplyMessageRequest.php
@@ -17,7 +17,7 @@
 /**
  * ReplyMessageRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ReplyMessageResponse.php b/src/clients/messaging-api/lib/Model/ReplyMessageResponse.php
index e5639751..ca366012 100644
--- a/src/clients/messaging-api/lib/Model/ReplyMessageResponse.php
+++ b/src/clients/messaging-api/lib/Model/ReplyMessageResponse.php
@@ -17,7 +17,7 @@
 /**
  * ReplyMessageResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuAliasListResponse.php b/src/clients/messaging-api/lib/Model/RichMenuAliasListResponse.php
index c7b5be56..8076519f 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuAliasListResponse.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuAliasListResponse.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuAliasListResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuAliasResponse.php b/src/clients/messaging-api/lib/Model/RichMenuAliasResponse.php
index 100b9e4f..d79185c6 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuAliasResponse.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuAliasResponse.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuAliasResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuArea.php b/src/clients/messaging-api/lib/Model/RichMenuArea.php
index 0a2da457..1340484c 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuArea.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuArea.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuArea
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBatchLinkOperation.php b/src/clients/messaging-api/lib/Model/RichMenuBatchLinkOperation.php
index 3b4c2e60..c00f0dc3 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBatchLinkOperation.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBatchLinkOperation.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBatchLinkOperation
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBatchOperation.php b/src/clients/messaging-api/lib/Model/RichMenuBatchOperation.php
index a27aaacd..ad75c07c 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBatchOperation.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBatchOperation.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBatchOperation
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBatchProgressPhase.php b/src/clients/messaging-api/lib/Model/RichMenuBatchProgressPhase.php
index 0aee6587..93d4f8f3 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBatchProgressPhase.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBatchProgressPhase.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBatchProgressPhase
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBatchProgressResponse.php b/src/clients/messaging-api/lib/Model/RichMenuBatchProgressResponse.php
index bf211627..16e5b577 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBatchProgressResponse.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBatchProgressResponse.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBatchProgressResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBatchRequest.php b/src/clients/messaging-api/lib/Model/RichMenuBatchRequest.php
index 1c568a4a..cb95a812 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBatchRequest.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBatchRequest.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBatchRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBatchUnlinkAllOperation.php b/src/clients/messaging-api/lib/Model/RichMenuBatchUnlinkAllOperation.php
index 4499bea6..3380cb1f 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBatchUnlinkAllOperation.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBatchUnlinkAllOperation.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBatchUnlinkAllOperation
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBatchUnlinkOperation.php b/src/clients/messaging-api/lib/Model/RichMenuBatchUnlinkOperation.php
index 4d2af846..06fb9d18 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBatchUnlinkOperation.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBatchUnlinkOperation.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBatchUnlinkOperation
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBounds.php b/src/clients/messaging-api/lib/Model/RichMenuBounds.php
index 9fbba981..ce552da0 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBounds.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBounds.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBounds
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBulkLinkRequest.php b/src/clients/messaging-api/lib/Model/RichMenuBulkLinkRequest.php
index dc52a626..bf7b1202 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBulkLinkRequest.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBulkLinkRequest.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBulkLinkRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuBulkUnlinkRequest.php b/src/clients/messaging-api/lib/Model/RichMenuBulkUnlinkRequest.php
index 196d1fba..b8fb3901 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuBulkUnlinkRequest.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuBulkUnlinkRequest.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuBulkUnlinkRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuIdResponse.php b/src/clients/messaging-api/lib/Model/RichMenuIdResponse.php
index 58b786a5..c3363a24 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuIdResponse.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuIdResponse.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuIdResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuListResponse.php b/src/clients/messaging-api/lib/Model/RichMenuListResponse.php
index 823cc893..af55dc48 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuListResponse.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuListResponse.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuListResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuRequest.php b/src/clients/messaging-api/lib/Model/RichMenuRequest.php
index d6a08d83..2bacdd2c 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuRequest.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuRequest.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuResponse.php b/src/clients/messaging-api/lib/Model/RichMenuResponse.php
index 5a765025..77c14060 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuResponse.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuResponse.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuSize.php b/src/clients/messaging-api/lib/Model/RichMenuSize.php
index f1d327f6..08a3455c 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuSize.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuSize.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuSize
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RichMenuSwitchAction.php b/src/clients/messaging-api/lib/Model/RichMenuSwitchAction.php
index def8d500..e8327499 100644
--- a/src/clients/messaging-api/lib/Model/RichMenuSwitchAction.php
+++ b/src/clients/messaging-api/lib/Model/RichMenuSwitchAction.php
@@ -17,7 +17,7 @@
 /**
  * RichMenuSwitchAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RoomMemberCountResponse.php b/src/clients/messaging-api/lib/Model/RoomMemberCountResponse.php
index 36c7940d..537ba3d6 100644
--- a/src/clients/messaging-api/lib/Model/RoomMemberCountResponse.php
+++ b/src/clients/messaging-api/lib/Model/RoomMemberCountResponse.php
@@ -17,7 +17,7 @@
 /**
  * RoomMemberCountResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/RoomUserProfileResponse.php b/src/clients/messaging-api/lib/Model/RoomUserProfileResponse.php
index 0670f8d9..a3d1baf4 100644
--- a/src/clients/messaging-api/lib/Model/RoomUserProfileResponse.php
+++ b/src/clients/messaging-api/lib/Model/RoomUserProfileResponse.php
@@ -17,7 +17,7 @@
 /**
  * RoomUserProfileResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Sender.php b/src/clients/messaging-api/lib/Model/Sender.php
index 3e5e0041..8153aca9 100644
--- a/src/clients/messaging-api/lib/Model/Sender.php
+++ b/src/clients/messaging-api/lib/Model/Sender.php
@@ -17,7 +17,7 @@
 /**
  * Sender
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/SentMessage.php b/src/clients/messaging-api/lib/Model/SentMessage.php
index ce29fa1e..0daf70da 100644
--- a/src/clients/messaging-api/lib/Model/SentMessage.php
+++ b/src/clients/messaging-api/lib/Model/SentMessage.php
@@ -17,7 +17,7 @@
 /**
  * SentMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/SetWebhookEndpointRequest.php b/src/clients/messaging-api/lib/Model/SetWebhookEndpointRequest.php
index 0a50b284..90a7f22c 100644
--- a/src/clients/messaging-api/lib/Model/SetWebhookEndpointRequest.php
+++ b/src/clients/messaging-api/lib/Model/SetWebhookEndpointRequest.php
@@ -17,7 +17,7 @@
 /**
  * SetWebhookEndpointRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ShowLoadingAnimationRequest.php b/src/clients/messaging-api/lib/Model/ShowLoadingAnimationRequest.php
index a580885c..9e89c9f1 100644
--- a/src/clients/messaging-api/lib/Model/ShowLoadingAnimationRequest.php
+++ b/src/clients/messaging-api/lib/Model/ShowLoadingAnimationRequest.php
@@ -17,7 +17,7 @@
 /**
  * ShowLoadingAnimationRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/StickerMessage.php b/src/clients/messaging-api/lib/Model/StickerMessage.php
index 37202088..277a2128 100644
--- a/src/clients/messaging-api/lib/Model/StickerMessage.php
+++ b/src/clients/messaging-api/lib/Model/StickerMessage.php
@@ -17,7 +17,7 @@
 /**
  * StickerMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/SubscribedMembershipPlan.php b/src/clients/messaging-api/lib/Model/SubscribedMembershipPlan.php
index d48b004e..55a5e771 100644
--- a/src/clients/messaging-api/lib/Model/SubscribedMembershipPlan.php
+++ b/src/clients/messaging-api/lib/Model/SubscribedMembershipPlan.php
@@ -17,7 +17,7 @@
 /**
  * SubscribedMembershipPlan
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/SubscribedMembershipUser.php b/src/clients/messaging-api/lib/Model/SubscribedMembershipUser.php
index c5bb10bd..86b7fd9f 100644
--- a/src/clients/messaging-api/lib/Model/SubscribedMembershipUser.php
+++ b/src/clients/messaging-api/lib/Model/SubscribedMembershipUser.php
@@ -17,7 +17,7 @@
 /**
  * SubscribedMembershipUser
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Subscription.php b/src/clients/messaging-api/lib/Model/Subscription.php
index 0332fb2b..20403279 100644
--- a/src/clients/messaging-api/lib/Model/Subscription.php
+++ b/src/clients/messaging-api/lib/Model/Subscription.php
@@ -17,7 +17,7 @@
 /**
  * Subscription
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/SubscriptionPeriodDemographic.php b/src/clients/messaging-api/lib/Model/SubscriptionPeriodDemographic.php
index d88928fe..74c45586 100644
--- a/src/clients/messaging-api/lib/Model/SubscriptionPeriodDemographic.php
+++ b/src/clients/messaging-api/lib/Model/SubscriptionPeriodDemographic.php
@@ -17,7 +17,7 @@
 /**
  * SubscriptionPeriodDemographic
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/SubscriptionPeriodDemographicFilter.php b/src/clients/messaging-api/lib/Model/SubscriptionPeriodDemographicFilter.php
index 7e43b68b..f95992ed 100644
--- a/src/clients/messaging-api/lib/Model/SubscriptionPeriodDemographicFilter.php
+++ b/src/clients/messaging-api/lib/Model/SubscriptionPeriodDemographicFilter.php
@@ -17,7 +17,7 @@
 /**
  * SubscriptionPeriodDemographicFilter
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/SubstitutionObject.php b/src/clients/messaging-api/lib/Model/SubstitutionObject.php
index 9d54d86c..ed9c47da 100644
--- a/src/clients/messaging-api/lib/Model/SubstitutionObject.php
+++ b/src/clients/messaging-api/lib/Model/SubstitutionObject.php
@@ -17,7 +17,7 @@
 /**
  * SubstitutionObject
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/Template.php b/src/clients/messaging-api/lib/Model/Template.php
index 94f3dd01..3c03cfe4 100644
--- a/src/clients/messaging-api/lib/Model/Template.php
+++ b/src/clients/messaging-api/lib/Model/Template.php
@@ -17,7 +17,7 @@
 /**
  * Template
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/TemplateImageAspectRatio.php b/src/clients/messaging-api/lib/Model/TemplateImageAspectRatio.php
index f702575a..c926fa3f 100644
--- a/src/clients/messaging-api/lib/Model/TemplateImageAspectRatio.php
+++ b/src/clients/messaging-api/lib/Model/TemplateImageAspectRatio.php
@@ -17,7 +17,7 @@
 /**
  * TemplateImageAspectRatio
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/TemplateImageSize.php b/src/clients/messaging-api/lib/Model/TemplateImageSize.php
index 233ba78a..c7510280 100644
--- a/src/clients/messaging-api/lib/Model/TemplateImageSize.php
+++ b/src/clients/messaging-api/lib/Model/TemplateImageSize.php
@@ -17,7 +17,7 @@
 /**
  * TemplateImageSize
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/TemplateMessage.php b/src/clients/messaging-api/lib/Model/TemplateMessage.php
index 4469e6d3..cbf25876 100644
--- a/src/clients/messaging-api/lib/Model/TemplateMessage.php
+++ b/src/clients/messaging-api/lib/Model/TemplateMessage.php
@@ -17,7 +17,7 @@
 /**
  * TemplateMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/TestWebhookEndpointRequest.php b/src/clients/messaging-api/lib/Model/TestWebhookEndpointRequest.php
index 206992b7..ad1c7697 100644
--- a/src/clients/messaging-api/lib/Model/TestWebhookEndpointRequest.php
+++ b/src/clients/messaging-api/lib/Model/TestWebhookEndpointRequest.php
@@ -17,7 +17,7 @@
 /**
  * TestWebhookEndpointRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/TestWebhookEndpointResponse.php b/src/clients/messaging-api/lib/Model/TestWebhookEndpointResponse.php
index bbcfa702..6afb2eff 100644
--- a/src/clients/messaging-api/lib/Model/TestWebhookEndpointResponse.php
+++ b/src/clients/messaging-api/lib/Model/TestWebhookEndpointResponse.php
@@ -17,7 +17,7 @@
 /**
  * TestWebhookEndpointResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/TextMessage.php b/src/clients/messaging-api/lib/Model/TextMessage.php
index fc80c21e..4a4e3cee 100644
--- a/src/clients/messaging-api/lib/Model/TextMessage.php
+++ b/src/clients/messaging-api/lib/Model/TextMessage.php
@@ -17,7 +17,7 @@
 /**
  * TextMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/TextMessageV2.php b/src/clients/messaging-api/lib/Model/TextMessageV2.php
index aa10bd64..907ec118 100644
--- a/src/clients/messaging-api/lib/Model/TextMessageV2.php
+++ b/src/clients/messaging-api/lib/Model/TextMessageV2.php
@@ -17,7 +17,7 @@
 /**
  * TextMessageV2
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/URIAction.php b/src/clients/messaging-api/lib/Model/URIAction.php
index 89bd2d96..dc92131f 100644
--- a/src/clients/messaging-api/lib/Model/URIAction.php
+++ b/src/clients/messaging-api/lib/Model/URIAction.php
@@ -17,7 +17,7 @@
 /**
  * URIAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/URIImagemapAction.php b/src/clients/messaging-api/lib/Model/URIImagemapAction.php
index c778852d..64e48f52 100644
--- a/src/clients/messaging-api/lib/Model/URIImagemapAction.php
+++ b/src/clients/messaging-api/lib/Model/URIImagemapAction.php
@@ -17,7 +17,7 @@
 /**
  * URIImagemapAction
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/UpdateRichMenuAliasRequest.php b/src/clients/messaging-api/lib/Model/UpdateRichMenuAliasRequest.php
index 23bca5a9..27fbd32b 100644
--- a/src/clients/messaging-api/lib/Model/UpdateRichMenuAliasRequest.php
+++ b/src/clients/messaging-api/lib/Model/UpdateRichMenuAliasRequest.php
@@ -17,7 +17,7 @@
 /**
  * UpdateRichMenuAliasRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/UserMentionTarget.php b/src/clients/messaging-api/lib/Model/UserMentionTarget.php
index 1d31d9c0..9816e48c 100644
--- a/src/clients/messaging-api/lib/Model/UserMentionTarget.php
+++ b/src/clients/messaging-api/lib/Model/UserMentionTarget.php
@@ -17,7 +17,7 @@
 /**
  * UserMentionTarget
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/UserProfileResponse.php b/src/clients/messaging-api/lib/Model/UserProfileResponse.php
index 32e7e03d..45f4854a 100644
--- a/src/clients/messaging-api/lib/Model/UserProfileResponse.php
+++ b/src/clients/messaging-api/lib/Model/UserProfileResponse.php
@@ -17,7 +17,7 @@
 /**
  * UserProfileResponse
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/ValidateMessageRequest.php b/src/clients/messaging-api/lib/Model/ValidateMessageRequest.php
index 96b15da1..9b7c571a 100644
--- a/src/clients/messaging-api/lib/Model/ValidateMessageRequest.php
+++ b/src/clients/messaging-api/lib/Model/ValidateMessageRequest.php
@@ -17,7 +17,7 @@
 /**
  * ValidateMessageRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/Model/VideoMessage.php b/src/clients/messaging-api/lib/Model/VideoMessage.php
index 4ea3bbe0..65b8ce09 100644
--- a/src/clients/messaging-api/lib/Model/VideoMessage.php
+++ b/src/clients/messaging-api/lib/Model/VideoMessage.php
@@ -17,7 +17,7 @@
 /**
  * VideoMessage
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Clients\MessagingApi
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/clients/messaging-api/lib/ObjectSerializer.php b/src/clients/messaging-api/lib/ObjectSerializer.php
index 51b4df2d..a95329f1 100644
--- a/src/clients/messaging-api/lib/ObjectSerializer.php
+++ b/src/clients/messaging-api/lib/ObjectSerializer.php
@@ -32,9 +32,8 @@
  *
  * The version of the OpenAPI document: 0.0.1
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
-
 /**
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
  * https://openapi-generator.tech
diff --git a/src/webhook/lib/Api/DummyApi.php b/src/webhook/lib/Api/DummyApi.php
index 1c6488e9..4c529579 100644
--- a/src/webhook/lib/Api/DummyApi.php
+++ b/src/webhook/lib/Api/DummyApi.php
@@ -16,7 +16,7 @@
  */
 /**
  * DummyApi
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -49,8 +49,11 @@
 use GuzzleHttp\Psr7\MultipartStream;
 use GuzzleHttp\Psr7\Request;
 use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
 use LINE\Webhook\ApiException;
 use LINE\Webhook\Configuration;
+use LINE\Webhook\FormDataProcessor;
 use LINE\Webhook\HeaderSelector;
 use LINE\Webhook\ObjectSerializer;
 
@@ -192,34 +195,15 @@ public function callbackWithHttpInfo($callbackRequest, string $contentType = sel
 
             switch($statusCode) {
                 case 200:
-                    if ('string' === '\SplFileObject') {
-                        $content = $response->getBody(); //stream goes to serializer
-                    } else {
-                        $content = (string) $response->getBody();
-                        if ('string' !== 'string') {
-                            try {
-                                $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                            } catch (\JsonException $exception) {
-                                throw new ApiException(
-                                    sprintf(
-                                        'Error JSON decoding server response (%s)',
-                                        $request->getUri()
-                                    ),
-                                    $statusCode,
-                                    $response->getHeaders(),
-                                    $content
-                                );
-                            }
-                        }
-                    }
-
-                    return [
-                        ObjectSerializer::deserialize($content, 'string', []),
-                        $response->getStatusCode(),
-                        $response->getHeaders()
-                    ];
+                    return $this->handleResponseWithDataType(
+                        'string',
+                        $request,
+                        $response,
+                    );
             }
 
+            
+
             if ($statusCode < 200 || $statusCode > 299) {
                 throw new ApiException(
                     sprintf(
@@ -233,34 +217,11 @@ public function callbackWithHttpInfo($callbackRequest, string $contentType = sel
                 );
             }
 
-            $returnType = 'string';
-            if ($returnType === '\SplFileObject') {
-                $content = $response->getBody(); //stream goes to serializer
-            } else {
-                $content = (string) $response->getBody();
-                if ($returnType !== 'string') {
-                    try {
-                        $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
-                    } catch (\JsonException $exception) {
-                        throw new ApiException(
-                            sprintf(
-                                'Error JSON decoding server response (%s)',
-                                $request->getUri()
-                            ),
-                            $statusCode,
-                            $response->getHeaders(),
-                            $content
-                        );
-                    }
-                }
-            }
-
-            return [
-                ObjectSerializer::deserialize($content, $returnType, []),
-                $response->getStatusCode(),
-                $response->getHeaders()
-            ];
-
+            return $this->handleResponseWithDataType(
+                'string',
+                $request,
+                $response,
+            );
         } catch (ApiException $e) {
             switch ($e->getCode()) {
                 case 200:
@@ -270,8 +231,10 @@ public function callbackWithHttpInfo($callbackRequest, string $contentType = sel
                         $e->getResponseHeaders()
                     );
                     $e->setResponseObject($data);
-                    break;
+                    throw $e;
             }
+        
+
             throw $e;
         }
     }
@@ -452,6 +415,57 @@ protected function createHttpClientOption()
             }
         }
 
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
         return $options;
     }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
 }
diff --git a/src/webhook/lib/ApiException.php b/src/webhook/lib/ApiException.php
index a5949cbe..1c565a02 100644
--- a/src/webhook/lib/ApiException.php
+++ b/src/webhook/lib/ApiException.php
@@ -16,7 +16,7 @@
  */
 /**
  * ApiException
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Configuration.php b/src/webhook/lib/Configuration.php
index 78e574be..b15e653f 100644
--- a/src/webhook/lib/Configuration.php
+++ b/src/webhook/lib/Configuration.php
@@ -16,7 +16,7 @@
  */
 /**
  * Configuration
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
@@ -44,7 +44,7 @@
 
 /**
  * Configuration Class Doc Comment
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -138,6 +138,20 @@ class Configuration
      */
     protected $tempFolderPath;
 
+    /**
+     * Path to a certificate file, for mTLS
+     *
+     * @var string
+     */
+    protected $certFile;
+
+    /**
+     * Path to a key file, for mTLS
+     *
+     * @var string
+     */
+    protected $keyFile;
+
     /**
      * Constructor
      */
@@ -411,6 +425,49 @@ public function getTempFolderPath()
         return $this->tempFolderPath;
     }
 
+    /**
+     * Sets the certificate file path, for mTLS
+     *
+     * @return $this
+     */
+     public function setCertFile($certFile)
+     {
+        $this->certFile = $certFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate file path, for mTLS
+     *
+     * @return string Certificate file path
+     */
+    public function getCertFile()
+    {
+        return $this->certFile;
+    }
+
+    /**
+     * Sets the certificate key path, for mTLS
+     *
+     * @return $this
+     */
+     public function setKeyFile($keyFile)
+     {
+        $this->keyFile = $keyFile;
+        return $this;
+     }
+
+    /**
+     * Gets the certificate key path, for mTLS
+     *
+     * @return string Certificate key path
+     */
+    public function getKeyFile()
+    {
+        return $this->keyFile;
+    }
+    
+
     /**
      * Gets the default configuration instance
      *
diff --git a/src/webhook/lib/FormDataProcessor.php b/src/webhook/lib/FormDataProcessor.php
new file mode 100644
index 00000000..45fc4d47
--- /dev/null
+++ b/src/webhook/lib/FormDataProcessor.php
@@ -0,0 +1,261 @@
+<?php
+/**
+ * Copyright 2026 LINE Corporation
+ *
+ * LINE Corporation licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+/**
+ * FormDataProcessor
+ * PHP version 7.4
+ *
+ * @category Class
+ * @package  LINE\Webhook
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+
+/**
+ * Webhook Type Definition
+ *
+ * Webhook event definition of the LINE Messaging API
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://openapi-generator.tech
+ * Generator version: 7.21.0
+ */
+
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+namespace LINE\Webhook;
+
+use ArrayAccess;
+use DateTime;
+use GuzzleHttp\Psr7\Utils;
+use Psr\Http\Message\StreamInterface;
+use SplFileObject;
+use LINE\Webhook\Model\ModelInterface;
+
+/**
+ * FormDataProcessor Class Doc Comment
+ *
+ * @category Class
+ * @package  LINE\Webhook
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+class FormDataProcessor
+{
+    /**
+     * Tags whether payload passed to ::prepare() contains one or more
+     * SplFileObject or stream values.
+     */
+    public bool $has_file = false;
+
+    /**
+     * Take value and turn it into an array suitable for inclusion in
+     * the http body (form parameter). If it's a string, pass through unchanged
+     * If it's a datetime object, format it in ISO8601
+     *
+     * @param array<string|bool|array|DateTime|ArrayAccess|SplFileObject> $values the value of the form parameter
+     *
+     * @return array [key => value] of formdata
+     */
+    public function prepare(array $values): array
+    {
+        $this->has_file = false;
+        $result = [];
+
+        foreach ($values as $k => $v) {
+            if ($v === null) {
+                continue;
+            }
+
+            $result[$k] = $this->makeFormSafe($v);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Flattens a multi-level array of data and generates a single-level array
+     * compatible with formdata - a single-level array where the keys use bracket
+     * notation to signify nested data.
+     *
+     * credit: https://github.com/FranBar1966/FlatPHP
+     */
+    public static function flatten(array $source, string $start = ''): array
+    {
+        $opt = [
+            'prefix'          => '[',
+            'suffix'          => ']',
+            'suffix-end'      => true,
+            'prefix-list'     => '[',
+            'suffix-list'     => ']',
+            'suffix-list-end' => true,
+        ];
+
+        if ($start === '') {
+            $currentPrefix    = '';
+            $currentSuffix    = '';
+            $currentSuffixEnd = false;
+        } elseif (array_is_list($source)) {
+            $currentPrefix    = $opt['prefix-list'];
+            $currentSuffix    = $opt['suffix-list'];
+            $currentSuffixEnd = $opt['suffix-list-end'];
+        } else {
+            $currentPrefix    = $opt['prefix'];
+            $currentSuffix    = $opt['suffix'];
+            $currentSuffixEnd = $opt['suffix-end'];
+        }
+
+        $currentName = $start;
+        $result = [];
+
+        foreach ($source as $key => $val) {
+            $currentName .= $currentPrefix.$key;
+
+            if (is_array($val) && !empty($val)) {
+                $currentName .= $currentSuffix;
+                $result += self::flatten($val, $currentName);
+            } else {
+                if ($currentSuffixEnd) {
+                    $currentName .= $currentSuffix;
+                }
+
+                if (is_resource($val)) {
+                    $result[$currentName] = $val;
+                } else {
+                    $result[$currentName] = ObjectSerializer::toString($val);
+                }
+            }
+
+            $currentName = $start;
+        }
+
+        return $result;
+    }
+
+    /**
+     * formdata must be limited to scalars or arrays of scalar values,
+     * or a resource for a file upload. Here we iterate through all available
+     * data and identify how to handle each scenario
+     */
+    protected function makeFormSafe($value)
+    {
+        if ($value instanceof SplFileObject) {
+            return $this->processFiles([$value])[0];
+        }
+
+        if (is_resource($value)) {
+            $this->has_file = true;
+
+            return $value;
+        }
+
+        if ($value instanceof ModelInterface) {
+            return $this->processModel($value);
+        }
+
+        if (is_array($value) || (is_object($value) && !$value instanceof \DateTimeInterface)) {
+            $data = [];
+
+            foreach ($value as $k => $v) {
+                $data[$k] = $this->makeFormSafe($v);
+            }
+
+            return $data;
+        }
+
+        return ObjectSerializer::toString($value);
+    }
+
+    /**
+     * We are able to handle nested ModelInterface. We do not simply call
+     * json_decode(json_encode()) because any given model may have binary data
+     * or other data that cannot be serialized to a JSON string
+     */
+    protected function processModel(ModelInterface $model): array
+    {
+        $result = [];
+
+        foreach ($model::openAPITypes() as $name => $type) {
+            $value = $model->offsetGet($name);
+
+            if ($value === null) {
+                continue;
+            }
+
+            if (strpos($type, '\SplFileObject') !== false) {
+                $file = is_array($value) ? $value : [$value];
+                $result[$name] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($value instanceof ModelInterface) {
+                $result[$name] = $this->processModel($value);
+
+                continue;
+            }
+
+            if (is_array($value) || is_object($value)) {
+                $result[$name] = $this->makeFormSafe($value);
+
+                continue;
+            }
+
+            $result[$name] = ObjectSerializer::toString($value);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Handle file data
+     */
+    protected function processFiles(array $files): array
+    {
+        $this->has_file = true;
+
+        $result = [];
+
+        foreach ($files as $i => $file) {
+            if (is_array($file)) {
+                $result[$i] = $this->processFiles($file);
+
+                continue;
+            }
+
+            if ($file instanceof StreamInterface) {
+                $result[$i] = $file;
+
+                continue;
+            }
+
+            if ($file instanceof SplFileObject) {
+                $result[$i] = $this->tryFopen($file);
+            }
+        }
+
+        return $result;
+    }
+
+    private function tryFopen(SplFileObject $file)
+    {
+        return Utils::tryFopen($file->getRealPath(), 'rb');
+    }
+}
diff --git a/src/webhook/lib/HeaderSelector.php b/src/webhook/lib/HeaderSelector.php
index c11b99b9..20204e01 100644
--- a/src/webhook/lib/HeaderSelector.php
+++ b/src/webhook/lib/HeaderSelector.php
@@ -16,7 +16,7 @@
  */
 /**
  * HeaderSelector
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/AccountLinkEvent.php b/src/webhook/lib/Model/AccountLinkEvent.php
index 452d30fc..a6ee23f9 100644
--- a/src/webhook/lib/Model/AccountLinkEvent.php
+++ b/src/webhook/lib/Model/AccountLinkEvent.php
@@ -17,7 +17,7 @@
 /**
  * AccountLinkEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/ActivatedEvent.php b/src/webhook/lib/Model/ActivatedEvent.php
index 0127a522..6083b91d 100644
--- a/src/webhook/lib/Model/ActivatedEvent.php
+++ b/src/webhook/lib/Model/ActivatedEvent.php
@@ -17,7 +17,7 @@
 /**
  * ActivatedEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/AllMentionee.php b/src/webhook/lib/Model/AllMentionee.php
index 137059b0..c903c743 100644
--- a/src/webhook/lib/Model/AllMentionee.php
+++ b/src/webhook/lib/Model/AllMentionee.php
@@ -17,7 +17,7 @@
 /**
  * AllMentionee
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/AttachedModuleContent.php b/src/webhook/lib/Model/AttachedModuleContent.php
index 8a291eca..8abc55e6 100644
--- a/src/webhook/lib/Model/AttachedModuleContent.php
+++ b/src/webhook/lib/Model/AttachedModuleContent.php
@@ -17,7 +17,7 @@
 /**
  * AttachedModuleContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/AudioMessageContent.php b/src/webhook/lib/Model/AudioMessageContent.php
index 9dcbcc80..7e0fec03 100644
--- a/src/webhook/lib/Model/AudioMessageContent.php
+++ b/src/webhook/lib/Model/AudioMessageContent.php
@@ -17,7 +17,7 @@
 /**
  * AudioMessageContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/BeaconContent.php b/src/webhook/lib/Model/BeaconContent.php
index d7d724a0..e6598e43 100644
--- a/src/webhook/lib/Model/BeaconContent.php
+++ b/src/webhook/lib/Model/BeaconContent.php
@@ -17,7 +17,7 @@
 /**
  * BeaconContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/BeaconEvent.php b/src/webhook/lib/Model/BeaconEvent.php
index 3a8249bd..4d6475ec 100644
--- a/src/webhook/lib/Model/BeaconEvent.php
+++ b/src/webhook/lib/Model/BeaconEvent.php
@@ -17,7 +17,7 @@
 /**
  * BeaconEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/BotResumedEvent.php b/src/webhook/lib/Model/BotResumedEvent.php
index a3c268af..3fe3b9b4 100644
--- a/src/webhook/lib/Model/BotResumedEvent.php
+++ b/src/webhook/lib/Model/BotResumedEvent.php
@@ -17,7 +17,7 @@
 /**
  * BotResumedEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/BotSuspendedEvent.php b/src/webhook/lib/Model/BotSuspendedEvent.php
index af7f6a34..063e2c6e 100644
--- a/src/webhook/lib/Model/BotSuspendedEvent.php
+++ b/src/webhook/lib/Model/BotSuspendedEvent.php
@@ -17,7 +17,7 @@
 /**
  * BotSuspendedEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/CallbackRequest.php b/src/webhook/lib/Model/CallbackRequest.php
index 44bc47e2..0ff3f43b 100644
--- a/src/webhook/lib/Model/CallbackRequest.php
+++ b/src/webhook/lib/Model/CallbackRequest.php
@@ -17,7 +17,7 @@
 /**
  * CallbackRequest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/ChatControl.php b/src/webhook/lib/Model/ChatControl.php
index e7c6e189..06018e64 100644
--- a/src/webhook/lib/Model/ChatControl.php
+++ b/src/webhook/lib/Model/ChatControl.php
@@ -17,7 +17,7 @@
 /**
  * ChatControl
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/ContentProvider.php b/src/webhook/lib/Model/ContentProvider.php
index 76e6a962..91d36f46 100644
--- a/src/webhook/lib/Model/ContentProvider.php
+++ b/src/webhook/lib/Model/ContentProvider.php
@@ -17,7 +17,7 @@
 /**
  * ContentProvider
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/DeactivatedEvent.php b/src/webhook/lib/Model/DeactivatedEvent.php
index 897d29df..b37c1e6e 100644
--- a/src/webhook/lib/Model/DeactivatedEvent.php
+++ b/src/webhook/lib/Model/DeactivatedEvent.php
@@ -17,7 +17,7 @@
 /**
  * DeactivatedEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/DeliveryContext.php b/src/webhook/lib/Model/DeliveryContext.php
index e28962b9..b1edf675 100644
--- a/src/webhook/lib/Model/DeliveryContext.php
+++ b/src/webhook/lib/Model/DeliveryContext.php
@@ -17,7 +17,7 @@
 /**
  * DeliveryContext
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/DetachedModuleContent.php b/src/webhook/lib/Model/DetachedModuleContent.php
index 78315839..46cf0282 100644
--- a/src/webhook/lib/Model/DetachedModuleContent.php
+++ b/src/webhook/lib/Model/DetachedModuleContent.php
@@ -17,7 +17,7 @@
 /**
  * DetachedModuleContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/Emoji.php b/src/webhook/lib/Model/Emoji.php
index dc750a7d..f87d91e9 100644
--- a/src/webhook/lib/Model/Emoji.php
+++ b/src/webhook/lib/Model/Emoji.php
@@ -17,7 +17,7 @@
 /**
  * Emoji
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/Event.php b/src/webhook/lib/Model/Event.php
index 2c23f5cc..ddc95689 100644
--- a/src/webhook/lib/Model/Event.php
+++ b/src/webhook/lib/Model/Event.php
@@ -17,7 +17,7 @@
 /**
  * Event
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/EventMode.php b/src/webhook/lib/Model/EventMode.php
index ee756e0c..e2f7f399 100644
--- a/src/webhook/lib/Model/EventMode.php
+++ b/src/webhook/lib/Model/EventMode.php
@@ -17,7 +17,7 @@
 /**
  * EventMode
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/FileMessageContent.php b/src/webhook/lib/Model/FileMessageContent.php
index d0b89bdb..6b4ecade 100644
--- a/src/webhook/lib/Model/FileMessageContent.php
+++ b/src/webhook/lib/Model/FileMessageContent.php
@@ -17,7 +17,7 @@
 /**
  * FileMessageContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/FollowDetail.php b/src/webhook/lib/Model/FollowDetail.php
index 97dfa957..70852ffc 100644
--- a/src/webhook/lib/Model/FollowDetail.php
+++ b/src/webhook/lib/Model/FollowDetail.php
@@ -17,7 +17,7 @@
 /**
  * FollowDetail
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/FollowEvent.php b/src/webhook/lib/Model/FollowEvent.php
index 5a7c198b..261fe611 100644
--- a/src/webhook/lib/Model/FollowEvent.php
+++ b/src/webhook/lib/Model/FollowEvent.php
@@ -17,7 +17,7 @@
 /**
  * FollowEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/GroupSource.php b/src/webhook/lib/Model/GroupSource.php
index 025b9f1e..79c371de 100644
--- a/src/webhook/lib/Model/GroupSource.php
+++ b/src/webhook/lib/Model/GroupSource.php
@@ -17,7 +17,7 @@
 /**
  * GroupSource
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/ImageMessageContent.php b/src/webhook/lib/Model/ImageMessageContent.php
index f7e97bdb..d9809290 100644
--- a/src/webhook/lib/Model/ImageMessageContent.php
+++ b/src/webhook/lib/Model/ImageMessageContent.php
@@ -17,7 +17,7 @@
 /**
  * ImageMessageContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/ImageSet.php b/src/webhook/lib/Model/ImageSet.php
index 94c94567..35038440 100644
--- a/src/webhook/lib/Model/ImageSet.php
+++ b/src/webhook/lib/Model/ImageSet.php
@@ -17,7 +17,7 @@
 /**
  * ImageSet
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/JoinEvent.php b/src/webhook/lib/Model/JoinEvent.php
index c28345b3..6c56ba6c 100644
--- a/src/webhook/lib/Model/JoinEvent.php
+++ b/src/webhook/lib/Model/JoinEvent.php
@@ -17,7 +17,7 @@
 /**
  * JoinEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/JoinedMembers.php b/src/webhook/lib/Model/JoinedMembers.php
index 268ee4bc..6191e66a 100644
--- a/src/webhook/lib/Model/JoinedMembers.php
+++ b/src/webhook/lib/Model/JoinedMembers.php
@@ -17,7 +17,7 @@
 /**
  * JoinedMembers
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/JoinedMembershipContent.php b/src/webhook/lib/Model/JoinedMembershipContent.php
index 61ad269b..40c16600 100644
--- a/src/webhook/lib/Model/JoinedMembershipContent.php
+++ b/src/webhook/lib/Model/JoinedMembershipContent.php
@@ -17,7 +17,7 @@
 /**
  * JoinedMembershipContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/LeaveEvent.php b/src/webhook/lib/Model/LeaveEvent.php
index d6049b4b..1ee6219a 100644
--- a/src/webhook/lib/Model/LeaveEvent.php
+++ b/src/webhook/lib/Model/LeaveEvent.php
@@ -17,7 +17,7 @@
 /**
  * LeaveEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/LeftMembers.php b/src/webhook/lib/Model/LeftMembers.php
index 8182168d..d080c5df 100644
--- a/src/webhook/lib/Model/LeftMembers.php
+++ b/src/webhook/lib/Model/LeftMembers.php
@@ -17,7 +17,7 @@
 /**
  * LeftMembers
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/LeftMembershipContent.php b/src/webhook/lib/Model/LeftMembershipContent.php
index 7d0db423..9f4b32a4 100644
--- a/src/webhook/lib/Model/LeftMembershipContent.php
+++ b/src/webhook/lib/Model/LeftMembershipContent.php
@@ -17,7 +17,7 @@
 /**
  * LeftMembershipContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/LinkContent.php b/src/webhook/lib/Model/LinkContent.php
index 3f3146ab..743649eb 100644
--- a/src/webhook/lib/Model/LinkContent.php
+++ b/src/webhook/lib/Model/LinkContent.php
@@ -17,7 +17,7 @@
 /**
  * LinkContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/LocationMessageContent.php b/src/webhook/lib/Model/LocationMessageContent.php
index ac221edc..10e075c4 100644
--- a/src/webhook/lib/Model/LocationMessageContent.php
+++ b/src/webhook/lib/Model/LocationMessageContent.php
@@ -17,7 +17,7 @@
 /**
  * LocationMessageContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/MemberJoinedEvent.php b/src/webhook/lib/Model/MemberJoinedEvent.php
index 84877551..b1739828 100644
--- a/src/webhook/lib/Model/MemberJoinedEvent.php
+++ b/src/webhook/lib/Model/MemberJoinedEvent.php
@@ -17,7 +17,7 @@
 /**
  * MemberJoinedEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/MemberLeftEvent.php b/src/webhook/lib/Model/MemberLeftEvent.php
index 5634f732..380af6a3 100644
--- a/src/webhook/lib/Model/MemberLeftEvent.php
+++ b/src/webhook/lib/Model/MemberLeftEvent.php
@@ -17,7 +17,7 @@
 /**
  * MemberLeftEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/MembershipContent.php b/src/webhook/lib/Model/MembershipContent.php
index 5a1b7646..65a07120 100644
--- a/src/webhook/lib/Model/MembershipContent.php
+++ b/src/webhook/lib/Model/MembershipContent.php
@@ -17,7 +17,7 @@
 /**
  * MembershipContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/MembershipEvent.php b/src/webhook/lib/Model/MembershipEvent.php
index 38f7d2c2..419ffdbd 100644
--- a/src/webhook/lib/Model/MembershipEvent.php
+++ b/src/webhook/lib/Model/MembershipEvent.php
@@ -17,7 +17,7 @@
 /**
  * MembershipEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/Mention.php b/src/webhook/lib/Model/Mention.php
index 922bedf8..7546f6c2 100644
--- a/src/webhook/lib/Model/Mention.php
+++ b/src/webhook/lib/Model/Mention.php
@@ -17,7 +17,7 @@
 /**
  * Mention
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/Mentionee.php b/src/webhook/lib/Model/Mentionee.php
index 2d57fd72..9377f0d6 100644
--- a/src/webhook/lib/Model/Mentionee.php
+++ b/src/webhook/lib/Model/Mentionee.php
@@ -17,7 +17,7 @@
 /**
  * Mentionee
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/MessageContent.php b/src/webhook/lib/Model/MessageContent.php
index 2e6f411e..c0b47c32 100644
--- a/src/webhook/lib/Model/MessageContent.php
+++ b/src/webhook/lib/Model/MessageContent.php
@@ -17,7 +17,7 @@
 /**
  * MessageContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/MessageEvent.php b/src/webhook/lib/Model/MessageEvent.php
index b666db6c..9e066669 100644
--- a/src/webhook/lib/Model/MessageEvent.php
+++ b/src/webhook/lib/Model/MessageEvent.php
@@ -17,7 +17,7 @@
 /**
  * MessageEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/ModelInterface.php b/src/webhook/lib/Model/ModelInterface.php
index 2662c3d6..d5eebf76 100644
--- a/src/webhook/lib/Model/ModelInterface.php
+++ b/src/webhook/lib/Model/ModelInterface.php
@@ -17,7 +17,7 @@
 /**
  * ModelInterface
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook\Model
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/ModuleContent.php b/src/webhook/lib/Model/ModuleContent.php
index 428c0580..29db8b4f 100644
--- a/src/webhook/lib/Model/ModuleContent.php
+++ b/src/webhook/lib/Model/ModuleContent.php
@@ -17,7 +17,7 @@
 /**
  * ModuleContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/ModuleEvent.php b/src/webhook/lib/Model/ModuleEvent.php
index 9acc474a..88c1803f 100644
--- a/src/webhook/lib/Model/ModuleEvent.php
+++ b/src/webhook/lib/Model/ModuleEvent.php
@@ -17,7 +17,7 @@
 /**
  * ModuleEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/PnpDelivery.php b/src/webhook/lib/Model/PnpDelivery.php
index 21f69b59..ffe34bbf 100644
--- a/src/webhook/lib/Model/PnpDelivery.php
+++ b/src/webhook/lib/Model/PnpDelivery.php
@@ -17,7 +17,7 @@
 /**
  * PnpDelivery
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/PnpDeliveryCompletionEvent.php b/src/webhook/lib/Model/PnpDeliveryCompletionEvent.php
index 10db402b..4ebacbd7 100644
--- a/src/webhook/lib/Model/PnpDeliveryCompletionEvent.php
+++ b/src/webhook/lib/Model/PnpDeliveryCompletionEvent.php
@@ -17,7 +17,7 @@
 /**
  * PnpDeliveryCompletionEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/PostbackContent.php b/src/webhook/lib/Model/PostbackContent.php
index 80881a5f..a3b51175 100644
--- a/src/webhook/lib/Model/PostbackContent.php
+++ b/src/webhook/lib/Model/PostbackContent.php
@@ -17,7 +17,7 @@
 /**
  * PostbackContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/PostbackEvent.php b/src/webhook/lib/Model/PostbackEvent.php
index e1a1ab39..d01a986a 100644
--- a/src/webhook/lib/Model/PostbackEvent.php
+++ b/src/webhook/lib/Model/PostbackEvent.php
@@ -17,7 +17,7 @@
 /**
  * PostbackEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/RenewedMembershipContent.php b/src/webhook/lib/Model/RenewedMembershipContent.php
index 1b8e28c3..88a45144 100644
--- a/src/webhook/lib/Model/RenewedMembershipContent.php
+++ b/src/webhook/lib/Model/RenewedMembershipContent.php
@@ -17,7 +17,7 @@
 /**
  * RenewedMembershipContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/RoomSource.php b/src/webhook/lib/Model/RoomSource.php
index b320882f..a65b3a1d 100644
--- a/src/webhook/lib/Model/RoomSource.php
+++ b/src/webhook/lib/Model/RoomSource.php
@@ -17,7 +17,7 @@
 /**
  * RoomSource
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/Source.php b/src/webhook/lib/Model/Source.php
index 72ea9e86..6cbb37f9 100644
--- a/src/webhook/lib/Model/Source.php
+++ b/src/webhook/lib/Model/Source.php
@@ -17,7 +17,7 @@
 /**
  * Source
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/StickerMessageContent.php b/src/webhook/lib/Model/StickerMessageContent.php
index bbcaf112..d758339c 100644
--- a/src/webhook/lib/Model/StickerMessageContent.php
+++ b/src/webhook/lib/Model/StickerMessageContent.php
@@ -17,7 +17,7 @@
 /**
  * StickerMessageContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/TextMessageContent.php b/src/webhook/lib/Model/TextMessageContent.php
index 9c3296dd..0e97ab33 100644
--- a/src/webhook/lib/Model/TextMessageContent.php
+++ b/src/webhook/lib/Model/TextMessageContent.php
@@ -17,7 +17,7 @@
 /**
  * TextMessageContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/UnfollowEvent.php b/src/webhook/lib/Model/UnfollowEvent.php
index 8da8b5d9..d9812372 100644
--- a/src/webhook/lib/Model/UnfollowEvent.php
+++ b/src/webhook/lib/Model/UnfollowEvent.php
@@ -17,7 +17,7 @@
 /**
  * UnfollowEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/UnsendDetail.php b/src/webhook/lib/Model/UnsendDetail.php
index 2eaba78f..dde2aadb 100644
--- a/src/webhook/lib/Model/UnsendDetail.php
+++ b/src/webhook/lib/Model/UnsendDetail.php
@@ -17,7 +17,7 @@
 /**
  * UnsendDetail
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/UnsendEvent.php b/src/webhook/lib/Model/UnsendEvent.php
index 29ca7eb9..45a771f6 100644
--- a/src/webhook/lib/Model/UnsendEvent.php
+++ b/src/webhook/lib/Model/UnsendEvent.php
@@ -17,7 +17,7 @@
 /**
  * UnsendEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/UserMentionee.php b/src/webhook/lib/Model/UserMentionee.php
index b514c613..83d60a3b 100644
--- a/src/webhook/lib/Model/UserMentionee.php
+++ b/src/webhook/lib/Model/UserMentionee.php
@@ -17,7 +17,7 @@
 /**
  * UserMentionee
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/UserSource.php b/src/webhook/lib/Model/UserSource.php
index de1752b7..37d87179 100644
--- a/src/webhook/lib/Model/UserSource.php
+++ b/src/webhook/lib/Model/UserSource.php
@@ -17,7 +17,7 @@
 /**
  * UserSource
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/VideoMessageContent.php b/src/webhook/lib/Model/VideoMessageContent.php
index 5c0d6f7c..9eac8fa7 100644
--- a/src/webhook/lib/Model/VideoMessageContent.php
+++ b/src/webhook/lib/Model/VideoMessageContent.php
@@ -17,7 +17,7 @@
 /**
  * VideoMessageContent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/VideoPlayComplete.php b/src/webhook/lib/Model/VideoPlayComplete.php
index 95a05dff..14ec6e99 100644
--- a/src/webhook/lib/Model/VideoPlayComplete.php
+++ b/src/webhook/lib/Model/VideoPlayComplete.php
@@ -17,7 +17,7 @@
 /**
  * VideoPlayComplete
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/Model/VideoPlayCompleteEvent.php b/src/webhook/lib/Model/VideoPlayCompleteEvent.php
index ab003f0e..415d1b0c 100644
--- a/src/webhook/lib/Model/VideoPlayCompleteEvent.php
+++ b/src/webhook/lib/Model/VideoPlayCompleteEvent.php
@@ -17,7 +17,7 @@
 /**
  * VideoPlayCompleteEvent
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/lib/ObjectSerializer.php b/src/webhook/lib/ObjectSerializer.php
index 462b4c32..2013d726 100644
--- a/src/webhook/lib/ObjectSerializer.php
+++ b/src/webhook/lib/ObjectSerializer.php
@@ -32,9 +32,8 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
-
 /**
  * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
  * https://openapi-generator.tech
diff --git a/src/webhook/test/Api/DummyApiTest.php b/src/webhook/test/Api/DummyApiTest.php
index da7d72b5..6de31e18 100644
--- a/src/webhook/test/Api/DummyApiTest.php
+++ b/src/webhook/test/Api/DummyApiTest.php
@@ -16,7 +16,7 @@
  */
 /**
  * DummyApiTest
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -31,7 +31,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/AccountLinkEventTest.php b/src/webhook/test/Model/AccountLinkEventTest.php
index 7c2f5686..1f8c036a 100644
--- a/src/webhook/test/Model/AccountLinkEventTest.php
+++ b/src/webhook/test/Model/AccountLinkEventTest.php
@@ -17,7 +17,7 @@
 /**
  * AccountLinkEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/ActivatedEventTest.php b/src/webhook/test/Model/ActivatedEventTest.php
index fd1891ae..311cd51b 100644
--- a/src/webhook/test/Model/ActivatedEventTest.php
+++ b/src/webhook/test/Model/ActivatedEventTest.php
@@ -17,7 +17,7 @@
 /**
  * ActivatedEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/AllMentioneeTest.php b/src/webhook/test/Model/AllMentioneeTest.php
index 6de9d90b..9f135eee 100644
--- a/src/webhook/test/Model/AllMentioneeTest.php
+++ b/src/webhook/test/Model/AllMentioneeTest.php
@@ -17,7 +17,7 @@
 /**
  * AllMentioneeTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/AttachedModuleContentTest.php b/src/webhook/test/Model/AttachedModuleContentTest.php
index 00d38f6e..e92434c4 100644
--- a/src/webhook/test/Model/AttachedModuleContentTest.php
+++ b/src/webhook/test/Model/AttachedModuleContentTest.php
@@ -17,7 +17,7 @@
 /**
  * AttachedModuleContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/AudioMessageContentTest.php b/src/webhook/test/Model/AudioMessageContentTest.php
index 769a29b3..0dad388f 100644
--- a/src/webhook/test/Model/AudioMessageContentTest.php
+++ b/src/webhook/test/Model/AudioMessageContentTest.php
@@ -17,7 +17,7 @@
 /**
  * AudioMessageContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/BeaconContentTest.php b/src/webhook/test/Model/BeaconContentTest.php
index 38754343..3de5c881 100644
--- a/src/webhook/test/Model/BeaconContentTest.php
+++ b/src/webhook/test/Model/BeaconContentTest.php
@@ -17,7 +17,7 @@
 /**
  * BeaconContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/BeaconEventTest.php b/src/webhook/test/Model/BeaconEventTest.php
index c9d2cf04..cb38d128 100644
--- a/src/webhook/test/Model/BeaconEventTest.php
+++ b/src/webhook/test/Model/BeaconEventTest.php
@@ -17,7 +17,7 @@
 /**
  * BeaconEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/BotResumedEventTest.php b/src/webhook/test/Model/BotResumedEventTest.php
index f2e4317b..70b661ea 100644
--- a/src/webhook/test/Model/BotResumedEventTest.php
+++ b/src/webhook/test/Model/BotResumedEventTest.php
@@ -17,7 +17,7 @@
 /**
  * BotResumedEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/BotSuspendedEventTest.php b/src/webhook/test/Model/BotSuspendedEventTest.php
index 62bab715..e48ad52e 100644
--- a/src/webhook/test/Model/BotSuspendedEventTest.php
+++ b/src/webhook/test/Model/BotSuspendedEventTest.php
@@ -17,7 +17,7 @@
 /**
  * BotSuspendedEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/CallbackRequestTest.php b/src/webhook/test/Model/CallbackRequestTest.php
index b6f4b776..8489fc8a 100644
--- a/src/webhook/test/Model/CallbackRequestTest.php
+++ b/src/webhook/test/Model/CallbackRequestTest.php
@@ -17,7 +17,7 @@
 /**
  * CallbackRequestTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/ChatControlTest.php b/src/webhook/test/Model/ChatControlTest.php
index 4aea45d4..98ef72c1 100644
--- a/src/webhook/test/Model/ChatControlTest.php
+++ b/src/webhook/test/Model/ChatControlTest.php
@@ -17,7 +17,7 @@
 /**
  * ChatControlTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/ContentProviderTest.php b/src/webhook/test/Model/ContentProviderTest.php
index 090ae0a0..60950429 100644
--- a/src/webhook/test/Model/ContentProviderTest.php
+++ b/src/webhook/test/Model/ContentProviderTest.php
@@ -17,7 +17,7 @@
 /**
  * ContentProviderTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/DeactivatedEventTest.php b/src/webhook/test/Model/DeactivatedEventTest.php
index 549cf378..c0f3a23d 100644
--- a/src/webhook/test/Model/DeactivatedEventTest.php
+++ b/src/webhook/test/Model/DeactivatedEventTest.php
@@ -17,7 +17,7 @@
 /**
  * DeactivatedEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/DeliveryContextTest.php b/src/webhook/test/Model/DeliveryContextTest.php
index 8bfec599..602d1857 100644
--- a/src/webhook/test/Model/DeliveryContextTest.php
+++ b/src/webhook/test/Model/DeliveryContextTest.php
@@ -17,7 +17,7 @@
 /**
  * DeliveryContextTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/DetachedModuleContentTest.php b/src/webhook/test/Model/DetachedModuleContentTest.php
index 87c3d38b..aa623380 100644
--- a/src/webhook/test/Model/DetachedModuleContentTest.php
+++ b/src/webhook/test/Model/DetachedModuleContentTest.php
@@ -17,7 +17,7 @@
 /**
  * DetachedModuleContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/EmojiTest.php b/src/webhook/test/Model/EmojiTest.php
index a66ec830..8149c38a 100644
--- a/src/webhook/test/Model/EmojiTest.php
+++ b/src/webhook/test/Model/EmojiTest.php
@@ -17,7 +17,7 @@
 /**
  * EmojiTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/EventModeTest.php b/src/webhook/test/Model/EventModeTest.php
index ea1263d8..23307800 100644
--- a/src/webhook/test/Model/EventModeTest.php
+++ b/src/webhook/test/Model/EventModeTest.php
@@ -17,7 +17,7 @@
 /**
  * EventModeTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/EventTest.php b/src/webhook/test/Model/EventTest.php
index 0af79c03..f659339d 100644
--- a/src/webhook/test/Model/EventTest.php
+++ b/src/webhook/test/Model/EventTest.php
@@ -17,7 +17,7 @@
 /**
  * EventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/FileMessageContentTest.php b/src/webhook/test/Model/FileMessageContentTest.php
index 4aa1a511..5fc47fa1 100644
--- a/src/webhook/test/Model/FileMessageContentTest.php
+++ b/src/webhook/test/Model/FileMessageContentTest.php
@@ -17,7 +17,7 @@
 /**
  * FileMessageContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/FollowDetailTest.php b/src/webhook/test/Model/FollowDetailTest.php
index 5f6a7d92..ed5a1747 100644
--- a/src/webhook/test/Model/FollowDetailTest.php
+++ b/src/webhook/test/Model/FollowDetailTest.php
@@ -17,7 +17,7 @@
 /**
  * FollowDetailTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/FollowEventTest.php b/src/webhook/test/Model/FollowEventTest.php
index 5c0b1ed7..c40e3ae3 100644
--- a/src/webhook/test/Model/FollowEventTest.php
+++ b/src/webhook/test/Model/FollowEventTest.php
@@ -17,7 +17,7 @@
 /**
  * FollowEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/GroupSourceTest.php b/src/webhook/test/Model/GroupSourceTest.php
index d438f6ca..af18861e 100644
--- a/src/webhook/test/Model/GroupSourceTest.php
+++ b/src/webhook/test/Model/GroupSourceTest.php
@@ -17,7 +17,7 @@
 /**
  * GroupSourceTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/ImageMessageContentTest.php b/src/webhook/test/Model/ImageMessageContentTest.php
index 5621250e..b1ec117a 100644
--- a/src/webhook/test/Model/ImageMessageContentTest.php
+++ b/src/webhook/test/Model/ImageMessageContentTest.php
@@ -17,7 +17,7 @@
 /**
  * ImageMessageContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/ImageSetTest.php b/src/webhook/test/Model/ImageSetTest.php
index 253dbc6c..aeaf4980 100644
--- a/src/webhook/test/Model/ImageSetTest.php
+++ b/src/webhook/test/Model/ImageSetTest.php
@@ -17,7 +17,7 @@
 /**
  * ImageSetTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/JoinEventTest.php b/src/webhook/test/Model/JoinEventTest.php
index bd9ef8b4..2287dbbb 100644
--- a/src/webhook/test/Model/JoinEventTest.php
+++ b/src/webhook/test/Model/JoinEventTest.php
@@ -17,7 +17,7 @@
 /**
  * JoinEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/JoinedMembersTest.php b/src/webhook/test/Model/JoinedMembersTest.php
index 5b5ab271..9ea153ec 100644
--- a/src/webhook/test/Model/JoinedMembersTest.php
+++ b/src/webhook/test/Model/JoinedMembersTest.php
@@ -17,7 +17,7 @@
 /**
  * JoinedMembersTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/JoinedMembershipContentTest.php b/src/webhook/test/Model/JoinedMembershipContentTest.php
index 22e5c4bc..571f601d 100644
--- a/src/webhook/test/Model/JoinedMembershipContentTest.php
+++ b/src/webhook/test/Model/JoinedMembershipContentTest.php
@@ -17,7 +17,7 @@
 /**
  * JoinedMembershipContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/LeaveEventTest.php b/src/webhook/test/Model/LeaveEventTest.php
index f67f7142..e0a53b21 100644
--- a/src/webhook/test/Model/LeaveEventTest.php
+++ b/src/webhook/test/Model/LeaveEventTest.php
@@ -17,7 +17,7 @@
 /**
  * LeaveEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/LeftMembersTest.php b/src/webhook/test/Model/LeftMembersTest.php
index f26c1662..53bdd6bd 100644
--- a/src/webhook/test/Model/LeftMembersTest.php
+++ b/src/webhook/test/Model/LeftMembersTest.php
@@ -17,7 +17,7 @@
 /**
  * LeftMembersTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/LeftMembershipContentTest.php b/src/webhook/test/Model/LeftMembershipContentTest.php
index c0de8656..e3d46e0a 100644
--- a/src/webhook/test/Model/LeftMembershipContentTest.php
+++ b/src/webhook/test/Model/LeftMembershipContentTest.php
@@ -17,7 +17,7 @@
 /**
  * LeftMembershipContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/LinkContentTest.php b/src/webhook/test/Model/LinkContentTest.php
index 7bfb9910..9bd875f9 100644
--- a/src/webhook/test/Model/LinkContentTest.php
+++ b/src/webhook/test/Model/LinkContentTest.php
@@ -17,7 +17,7 @@
 /**
  * LinkContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/LocationMessageContentTest.php b/src/webhook/test/Model/LocationMessageContentTest.php
index 25d02d7e..5a29604e 100644
--- a/src/webhook/test/Model/LocationMessageContentTest.php
+++ b/src/webhook/test/Model/LocationMessageContentTest.php
@@ -17,7 +17,7 @@
 /**
  * LocationMessageContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/MemberJoinedEventTest.php b/src/webhook/test/Model/MemberJoinedEventTest.php
index 3d14aeb2..a457fa86 100644
--- a/src/webhook/test/Model/MemberJoinedEventTest.php
+++ b/src/webhook/test/Model/MemberJoinedEventTest.php
@@ -17,7 +17,7 @@
 /**
  * MemberJoinedEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/MemberLeftEventTest.php b/src/webhook/test/Model/MemberLeftEventTest.php
index 74897a80..28c49bf3 100644
--- a/src/webhook/test/Model/MemberLeftEventTest.php
+++ b/src/webhook/test/Model/MemberLeftEventTest.php
@@ -17,7 +17,7 @@
 /**
  * MemberLeftEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/MembershipContentTest.php b/src/webhook/test/Model/MembershipContentTest.php
index 365b47f9..61582608 100644
--- a/src/webhook/test/Model/MembershipContentTest.php
+++ b/src/webhook/test/Model/MembershipContentTest.php
@@ -17,7 +17,7 @@
 /**
  * MembershipContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/MembershipEventTest.php b/src/webhook/test/Model/MembershipEventTest.php
index 66800505..3ced4451 100644
--- a/src/webhook/test/Model/MembershipEventTest.php
+++ b/src/webhook/test/Model/MembershipEventTest.php
@@ -17,7 +17,7 @@
 /**
  * MembershipEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/MentionTest.php b/src/webhook/test/Model/MentionTest.php
index 5def60a9..db07cea2 100644
--- a/src/webhook/test/Model/MentionTest.php
+++ b/src/webhook/test/Model/MentionTest.php
@@ -17,7 +17,7 @@
 /**
  * MentionTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/MentioneeTest.php b/src/webhook/test/Model/MentioneeTest.php
index 89ecef93..4e133a55 100644
--- a/src/webhook/test/Model/MentioneeTest.php
+++ b/src/webhook/test/Model/MentioneeTest.php
@@ -17,7 +17,7 @@
 /**
  * MentioneeTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/MessageContentTest.php b/src/webhook/test/Model/MessageContentTest.php
index a80e904e..ef19d4cd 100644
--- a/src/webhook/test/Model/MessageContentTest.php
+++ b/src/webhook/test/Model/MessageContentTest.php
@@ -17,7 +17,7 @@
 /**
  * MessageContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/MessageEventTest.php b/src/webhook/test/Model/MessageEventTest.php
index 2328d58c..f166d0ea 100644
--- a/src/webhook/test/Model/MessageEventTest.php
+++ b/src/webhook/test/Model/MessageEventTest.php
@@ -17,7 +17,7 @@
 /**
  * MessageEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/ModuleContentTest.php b/src/webhook/test/Model/ModuleContentTest.php
index 4fdb0956..674da03a 100644
--- a/src/webhook/test/Model/ModuleContentTest.php
+++ b/src/webhook/test/Model/ModuleContentTest.php
@@ -17,7 +17,7 @@
 /**
  * ModuleContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/ModuleEventTest.php b/src/webhook/test/Model/ModuleEventTest.php
index c16a98a2..aaf68046 100644
--- a/src/webhook/test/Model/ModuleEventTest.php
+++ b/src/webhook/test/Model/ModuleEventTest.php
@@ -17,7 +17,7 @@
 /**
  * ModuleEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/PnpDeliveryCompletionEventTest.php b/src/webhook/test/Model/PnpDeliveryCompletionEventTest.php
index 41623548..44a7d2c7 100644
--- a/src/webhook/test/Model/PnpDeliveryCompletionEventTest.php
+++ b/src/webhook/test/Model/PnpDeliveryCompletionEventTest.php
@@ -17,7 +17,7 @@
 /**
  * PnpDeliveryCompletionEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/PnpDeliveryTest.php b/src/webhook/test/Model/PnpDeliveryTest.php
index 8cb40b53..c963602a 100644
--- a/src/webhook/test/Model/PnpDeliveryTest.php
+++ b/src/webhook/test/Model/PnpDeliveryTest.php
@@ -17,7 +17,7 @@
 /**
  * PnpDeliveryTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/PostbackContentTest.php b/src/webhook/test/Model/PostbackContentTest.php
index e4a268b8..0b5f2848 100644
--- a/src/webhook/test/Model/PostbackContentTest.php
+++ b/src/webhook/test/Model/PostbackContentTest.php
@@ -17,7 +17,7 @@
 /**
  * PostbackContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/PostbackEventTest.php b/src/webhook/test/Model/PostbackEventTest.php
index 0f722c54..dd070734 100644
--- a/src/webhook/test/Model/PostbackEventTest.php
+++ b/src/webhook/test/Model/PostbackEventTest.php
@@ -17,7 +17,7 @@
 /**
  * PostbackEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/RenewedMembershipContentTest.php b/src/webhook/test/Model/RenewedMembershipContentTest.php
index 6fa7ca27..bafe4535 100644
--- a/src/webhook/test/Model/RenewedMembershipContentTest.php
+++ b/src/webhook/test/Model/RenewedMembershipContentTest.php
@@ -17,7 +17,7 @@
 /**
  * RenewedMembershipContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/RoomSourceTest.php b/src/webhook/test/Model/RoomSourceTest.php
index 08ac70ac..2ebabe83 100644
--- a/src/webhook/test/Model/RoomSourceTest.php
+++ b/src/webhook/test/Model/RoomSourceTest.php
@@ -17,7 +17,7 @@
 /**
  * RoomSourceTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/SourceTest.php b/src/webhook/test/Model/SourceTest.php
index 48289c4a..b308a35c 100644
--- a/src/webhook/test/Model/SourceTest.php
+++ b/src/webhook/test/Model/SourceTest.php
@@ -17,7 +17,7 @@
 /**
  * SourceTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/StickerMessageContentTest.php b/src/webhook/test/Model/StickerMessageContentTest.php
index f5a3c9c7..22485755 100644
--- a/src/webhook/test/Model/StickerMessageContentTest.php
+++ b/src/webhook/test/Model/StickerMessageContentTest.php
@@ -17,7 +17,7 @@
 /**
  * StickerMessageContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/TextMessageContentTest.php b/src/webhook/test/Model/TextMessageContentTest.php
index d0497bea..9bf632a3 100644
--- a/src/webhook/test/Model/TextMessageContentTest.php
+++ b/src/webhook/test/Model/TextMessageContentTest.php
@@ -17,7 +17,7 @@
 /**
  * TextMessageContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/UnfollowEventTest.php b/src/webhook/test/Model/UnfollowEventTest.php
index 4f458fd4..b66466c4 100644
--- a/src/webhook/test/Model/UnfollowEventTest.php
+++ b/src/webhook/test/Model/UnfollowEventTest.php
@@ -17,7 +17,7 @@
 /**
  * UnfollowEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/UnsendDetailTest.php b/src/webhook/test/Model/UnsendDetailTest.php
index 0142fe40..00591a65 100644
--- a/src/webhook/test/Model/UnsendDetailTest.php
+++ b/src/webhook/test/Model/UnsendDetailTest.php
@@ -17,7 +17,7 @@
 /**
  * UnsendDetailTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/UnsendEventTest.php b/src/webhook/test/Model/UnsendEventTest.php
index e44439e1..7b84dbd1 100644
--- a/src/webhook/test/Model/UnsendEventTest.php
+++ b/src/webhook/test/Model/UnsendEventTest.php
@@ -17,7 +17,7 @@
 /**
  * UnsendEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/UserMentioneeTest.php b/src/webhook/test/Model/UserMentioneeTest.php
index 2f5fe7a4..af45873d 100644
--- a/src/webhook/test/Model/UserMentioneeTest.php
+++ b/src/webhook/test/Model/UserMentioneeTest.php
@@ -17,7 +17,7 @@
 /**
  * UserMentioneeTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/UserSourceTest.php b/src/webhook/test/Model/UserSourceTest.php
index 889a0d53..25794929 100644
--- a/src/webhook/test/Model/UserSourceTest.php
+++ b/src/webhook/test/Model/UserSourceTest.php
@@ -17,7 +17,7 @@
 /**
  * UserSourceTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/VideoMessageContentTest.php b/src/webhook/test/Model/VideoMessageContentTest.php
index 90f58eae..70a80e36 100644
--- a/src/webhook/test/Model/VideoMessageContentTest.php
+++ b/src/webhook/test/Model/VideoMessageContentTest.php
@@ -17,7 +17,7 @@
 /**
  * VideoMessageContentTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/VideoPlayCompleteEventTest.php b/src/webhook/test/Model/VideoPlayCompleteEventTest.php
index 08648161..16415a71 100644
--- a/src/webhook/test/Model/VideoPlayCompleteEventTest.php
+++ b/src/webhook/test/Model/VideoPlayCompleteEventTest.php
@@ -17,7 +17,7 @@
 /**
  * VideoPlayCompleteEventTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/src/webhook/test/Model/VideoPlayCompleteTest.php b/src/webhook/test/Model/VideoPlayCompleteTest.php
index c0e3f57e..e2ead9c3 100644
--- a/src/webhook/test/Model/VideoPlayCompleteTest.php
+++ b/src/webhook/test/Model/VideoPlayCompleteTest.php
@@ -17,7 +17,7 @@
 /**
  * VideoPlayCompleteTest
  *
- * PHP version 7.4
+ * PHP version 8.1
  *
  * @category Class
  * @package  LINE\Webhook
@@ -32,7 +32,7 @@
  *
  * The version of the OpenAPI document: 1.0.0
  * Generated by: https://openapi-generator.tech
- * Generator version: 7.11.0
+ * Generator version: 7.21.0
  */
 
 /**
diff --git a/tools/custom-template/api.mustache b/tools/custom-template/api.mustache
new file mode 100644
index 00000000..7d25f0d8
--- /dev/null
+++ b/tools/custom-template/api.mustache
@@ -0,0 +1,891 @@
+<?php
+/**
+ * {{classname}}
+ * PHP version 8.1
+ *
+ * @category Class
+ * @package  {{invokerPackage}}
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+
+{{>partial_header}}
+
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+namespace {{apiPackage}};
+
+use GuzzleHttp\Client;
+use GuzzleHttp\ClientInterface;
+use GuzzleHttp\Exception\ConnectException;
+use GuzzleHttp\Exception\RequestException;
+use GuzzleHttp\Psr7\MultipartStream;
+use GuzzleHttp\Psr7\Request;
+use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use {{invokerPackage}}\ApiException;
+use {{invokerPackage}}\Configuration;
+use {{invokerPackage}}\FormDataProcessor;
+use {{invokerPackage}}\HeaderSelector;
+use {{invokerPackage}}\ObjectSerializer;
+
+/**
+ * {{classname}} Class Doc Comment
+ *
+ * @category Class
+ * @package  {{invokerPackage}}
+ * @author   OpenAPI Generator team
+ * @link     https://openapi-generator.tech
+ */
+{{#operations}}class {{classname}}
+{
+    /**
+     * @var ClientInterface
+     */
+    protected $client;
+
+    /**
+     * @var Configuration
+     */
+    protected $config;
+
+    /**
+     * @var HeaderSelector
+     */
+    protected $headerSelector;
+
+    /**
+     * @var int Host index
+     */
+    protected $hostIndex;
+
+    /** @var string[] $contentTypes **/
+    public const contentTypes = [{{#operation}}
+        '{{{operationId}}}' => [{{#consumes}}
+            '{{{mediaType}}}',{{/consumes}}
+        {{^consumes}}
+            'application/json',
+{{/consumes}}        ],{{/operation}}
+    ];
+
+    /**
+     * @param ClientInterface $client
+     * @param Configuration   $config
+     * @param HeaderSelector  $selector
+     * @param int             $hostIndex (Optional) host index to select the list of hosts if defined in the OpenAPI spec
+     */
+    public function __construct(
+        ?ClientInterface $client = null,
+        ?Configuration $config = null,
+        ?HeaderSelector $selector = null,
+        int $hostIndex = 0
+    ) {
+        $this->client = $client ?: new Client();
+        $this->config = $config ?: Configuration::getDefaultConfiguration();
+        $this->headerSelector = $selector ?: new HeaderSelector();
+        $this->hostIndex = $hostIndex;
+    }
+
+    /**
+     * Set the host index
+     *
+     * @param int $hostIndex Host index (required)
+     */
+    public function setHostIndex($hostIndex): void
+    {
+        $this->hostIndex = $hostIndex;
+    }
+
+    /**
+     * Get the host index
+     *
+     * @return int Host index
+     */
+    public function getHostIndex()
+    {
+        return $this->hostIndex;
+    }
+
+    /**
+     * @return Configuration
+     */
+    public function getConfig()
+    {
+        return $this->config;
+    }
+
+{{#operation}}
+    /**
+     * Operation {{{operationId}}}
+{{#summary}}
+     *
+     * {{.}}
+{{/summary}}
+     *
+{{#description}}
+     * {{.}}
+     *
+{{/description}}
+{{#exts.x-group-parameters}}
+     * Note: the input parameter is an associative array with the keys listed as the parameter name below
+     *
+{{/exts.x-group-parameters}}
+{{#servers}}
+{{#-first}}
+     * This operation contains host(s) defined in the OpenAPI spec. Use 'hostIndex' to select the host.
+     * if needed, use the 'variables' parameter to pass variables to the host.
+{{/-first}}
+     * URL: {{{url}}}
+{{#variables}}
+{{#-first}}
+     *  Variables:
+{{/-first}}
+     *    - {{{name}}}: {{{description}}}{{^description}} No description provided{{/description}}{{#enumValues}}
+{{#-first}}
+     *      Allowed values:
+{{/-first}}
+     *        - {{{.}}}{{/enumValues}}
+{{/variables}}
+{{#-last}}
+     *
+{{/-last}}
+{{/servers}}
+{{#allParams}}
+     * @param  {{{dataType}}}{{#notRequiredOrIsNullable}}|null{{/notRequiredOrIsNullable}} ${{paramName}}{{#description}} {{.}}{{/description}}{{^description}} {{paramName}}{{/description}} {{#required}}(required){{/required}}{{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{#isDeprecated}} (deprecated){{/isDeprecated}}
+{{/allParams}}
+{{#servers}}
+{{#-first}}
+     * @param  null|int $hostIndex Host index. Defaults to null. If null, then the library will use $this->hostIndex instead
+     * @param  array $variables Associative array of variables to pass to the host. Defaults to empty array.
+{{/-first}}
+{{/servers}}
+     * @param  string $contentType The value for the Content-Type header. Check self::contentTypes['{{{operationId}}}'] to see the possible values for this operation
+     *
+     * @throws \{{invokerPackage}}\ApiException on non-2xx response or if the response body is not in the expected format
+     * @throws \InvalidArgumentException
+     * @return {{#returnType}}{{#responses}}{{#dataType}}{{^-first}}|{{/-first}}{{/dataType}}{{{dataType}}}{{/responses}}{{/returnType}}{{^returnType}}void{{/returnType}}
+    {{#isDeprecated}}
+     * @deprecated
+    {{/isDeprecated}}
+     */
+    public function {{operationId}}({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}{{^required}} = {{#defaultValue}}{{{.}}}{{/defaultValue}}{{^defaultValue}}null{{/defaultValue}}{{/required}}, {{/allParams}}{{#servers}}{{#-first}}?int $hostIndex = null, array $variables = [], {{/-first}}{{/servers}}string $contentType = self::contentTypes['{{{operationId}}}'][0]{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}})
+    {
+        {{#returnType}}list($response) = {{/returnType}}$this->{{operationId}}WithHttpInfo({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}, {{/allParams}}{{#servers}}{{#-first}}$hostIndex, $variables, {{/-first}}{{/servers}}$contentType{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}});{{#returnType}}
+        return $response;{{/returnType}}
+    }
+
+    /**
+     * Operation {{{operationId}}}WithHttpInfo
+{{#summary}}
+     *
+     * {{.}}
+{{/summary}}
+     *
+{{#description}}
+     * {{.}}
+     *
+{{/description}}
+{{#exts.x-group-parameters}}
+     * Note: the input parameter is an associative array with the keys listed as the parameter name below
+     *
+{{/exts.x-group-parameters}}
+{{#servers}}
+{{#-first}}
+     * This operation contains host(s) defined in the OpenAPI spec. Use 'hostIndex' to select the host.
+     * if needed, use the 'variables' parameter to pass variables to the host.
+{{/-first}}
+     * URL: {{{url}}}
+{{#variables}}
+{{#-first}}
+     *  Variables:
+{{/-first}}
+     *    - {{{name}}}: {{{description}}}{{^description}} No description provided{{/description}}{{#enumValues}}
+{{#-first}}
+     *      Allowed values:
+{{/-first}}
+     *        - {{{.}}}{{/enumValues}}
+{{/variables}}
+{{#-last}}
+     *
+{{/-last}}
+{{/servers}}
+{{#allParams}}
+     * @param  {{{dataType}}}{{#notRequiredOrIsNullable}}|null{{/notRequiredOrIsNullable}} ${{paramName}}{{#description}} {{.}}{{/description}} {{#required}}(required){{/required}}{{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{#isDeprecated}} (deprecated){{/isDeprecated}}
+{{/allParams}}
+{{#servers}}
+{{#-first}}
+     * @param  null|int $hostIndex Host index. Defaults to null. If null, then the library will use $this->hostIndex instead
+     * @param  array $variables Associative array of variables to pass to the host. Defaults to empty array.
+{{/-first}}
+{{/servers}}
+     * @param  string $contentType The value for the Content-Type header. Check self::contentTypes['{{{operationId}}}'] to see the possible values for this operation
+     *
+     * @throws \{{invokerPackage}}\ApiException on non-2xx response or if the response body is not in the expected format
+     * @throws \InvalidArgumentException
+     * @return array of {{#returnType}}{{#responses}}{{#dataType}}{{^-first}}|{{/-first}}{{/dataType}}{{{dataType}}}{{/responses}}{{/returnType}}{{^returnType}}null{{/returnType}}, HTTP status code, HTTP response headers (array of strings)
+    {{#isDeprecated}}
+     * @deprecated
+    {{/isDeprecated}}
+     */
+    public function {{operationId}}WithHttpInfo({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}{{^required}} = {{#defaultValue}}{{{.}}}{{/defaultValue}}{{^defaultValue}}null{{/defaultValue}}{{/required}}, {{/allParams}}{{#servers}}{{#-first}}?int $hostIndex = null, array $variables = [], {{/-first}}{{/servers}}string $contentType = self::contentTypes['{{{operationId}}}'][0]{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}})
+    {
+        $request = $this->{{operationId}}Request({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}, {{/allParams}}{{#servers}}{{#-first}}$hostIndex, $variables, {{/-first}}{{/servers}}$contentType{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}});
+
+        try {
+            $options = $this->createHttpClientOption();
+            try {
+                $response = $this->client->send($request, $options);
+            } catch (RequestException $e) {
+                throw new ApiException(
+                    "[{$e->getCode()}] {$e->getMessage()}",
+                    (int) $e->getCode(),
+                    $e->getResponse() ? $e->getResponse()->getHeaders() : null,
+                    $e->getResponse() ? (string) $e->getResponse()->getBody() : null
+                );
+            } catch (ConnectException $e) {
+                throw new ApiException(
+                    "[{$e->getCode()}] {$e->getMessage()}",
+                    (int) $e->getCode(),
+                    null,
+                    null
+                );
+            }
+
+            $statusCode = $response->getStatusCode();
+
+            {{#returnType}}
+            {{#responses}}
+            {{#-first}}
+
+            switch($statusCode) {
+            {{/-first}}
+            {{#dataType}}
+                {{^isRange}}{{^isWildcard}}case {{code}}:{{/isWildcard}}{{#isWildcard}}default:{{/isWildcard}}
+                    return $this->handleResponseWithDataType(
+                        '{{{dataType}}}',
+                        $request,
+                        $response,
+                    );{{/isRange}}
+            {{/dataType}}
+            {{#-last}}
+            }
+            {{/-last}}
+            {{/responses}}
+
+            {{#responses}}{{#dataType}}{{#isRange}}{{^isWildcard}}if ($this->responseWithinRangeCode('{{code}}', $statusCode)) {
+                return $this->handleResponseWithDataType(
+                    '{{{dataType}}}',
+                    $request,
+                    $response,
+                );
+            }{{/isWildcard}}{{/isRange}}{{/dataType}}{{/responses}}
+
+            if ($statusCode < 200 || $statusCode > 299) {
+                throw new ApiException(
+                    sprintf(
+                        '[%d] Error connecting to the API (%s)',
+                        $statusCode,
+                        (string) $request->getUri()
+                    ),
+                    $statusCode,
+                    $response->getHeaders(),
+                    (string) $response->getBody()
+                );
+            }
+
+            return $this->handleResponseWithDataType(
+                '{{{returnType}}}',
+                $request,
+                $response,
+            );
+            {{/returnType}}
+            {{^returnType}}
+
+            return [null, $statusCode, $response->getHeaders()];
+            {{/returnType}}
+        } catch (ApiException $e) {
+            switch ($e->getCode()) {
+        {{#responses}}
+            {{#dataType}}
+                {{^isRange}}{{^isWildcard}}case {{code}}:{{/isWildcard}}{{#isWildcard}}default:{{/isWildcard}}
+                    $data = ObjectSerializer::deserialize(
+                        $e->getResponseBody(),
+                        '{{{dataType}}}',
+                        $e->getResponseHeaders()
+                    );
+                    $e->setResponseObject($data);
+                    throw $e;{{/isRange}}
+            {{/dataType}}
+        {{/responses}}
+            }
+        {{#responses}}{{#dataType}}{{#isRange}}{{^isWildcard}}
+            if ($this->responseWithinRangeCode('{{code}}', $e->getCode())) {
+                $data = ObjectSerializer::deserialize(
+                    $e->getResponseBody(),
+                    '{{{dataType}}}',
+                    $e->getResponseHeaders()
+                );
+                $e->setResponseObject($data);
+                throw $e;
+            }{{/isWildcard}}{{/isRange}}{{/dataType}}{{/responses}}
+
+            throw $e;
+        }
+    }
+
+    /**
+     * Operation {{{operationId}}}Async
+     *
+{{#summary}}
+     * {{.}}
+     *
+{{/summary}}
+{{#description}}
+     * {{.}}
+     *
+{{/description}}
+{{#exts.x-group-parameters}}
+     * Note: the input parameter is an associative array with the keys listed as the parameter name below
+     *
+{{/exts.x-group-parameters}}
+{{#servers}}
+{{#-first}}
+     * This operation contains host(s) defined in the OpenAPI spec. Use 'hostIndex' to select the host.
+     * if needed, use the 'variables' parameter to pass variables to the host.
+{{/-first}}
+     * URL: {{{url}}}
+{{#variables}}
+{{#-first}}
+     *  Variables:
+{{/-first}}
+     *    - {{{name}}}: {{{description}}}{{^description}} No description provided{{/description}}{{#enumValues}}
+{{#-first}}
+     *      Allowed values:
+{{/-first}}
+     *        - {{{.}}}{{/enumValues}}
+{{/variables}}
+{{#-last}}
+     *
+{{/-last}}
+{{/servers}}
+{{#allParams}}
+     * @param  {{{dataType}}}{{#notRequiredOrIsNullable}}|null{{/notRequiredOrIsNullable}} ${{paramName}}{{#description}} {{.}}{{/description}} {{#required}}(required){{/required}}{{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{#isDeprecated}} (deprecated){{/isDeprecated}}
+{{/allParams}}
+{{#servers}}
+{{#-first}}
+     * @param  null|int $hostIndex Host index. Defaults to null. If null, then the library will use $this->hostIndex instead
+     * @param  array $variables Associative array of variables to pass to the host. Defaults to empty array.
+{{/-first}}
+{{/servers}}
+     * @param  string $contentType The value for the Content-Type header. Check self::contentTypes['{{{operationId}}}'] to see the possible values for this operation
+     *
+     * @throws \InvalidArgumentException
+     * @return \GuzzleHttp\Promise\PromiseInterface
+    {{#isDeprecated}}
+     * @deprecated
+    {{/isDeprecated}}
+     */
+    public function {{operationId}}Async({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}{{^required}} = {{#defaultValue}}{{{.}}}{{/defaultValue}}{{^defaultValue}}null{{/defaultValue}}{{/required}}, {{/allParams}}{{#servers}}{{#-first}}?int $hostIndex = null, array $variables = [], {{/-first}}{{/servers}}string $contentType = self::contentTypes['{{{operationId}}}'][0]{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}})
+    {
+        return $this->{{operationId}}AsyncWithHttpInfo({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}, {{/allParams}}{{#servers}}{{#-first}}$hostIndex, $variables, {{/-first}}{{/servers}}$contentType{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}})
+            ->then(
+                function ($response) {
+                    return $response[0];
+                }
+            );
+    }
+
+    /**
+     * Operation {{{operationId}}}AsyncWithHttpInfo
+     *
+{{#summary}}
+     * {{.}}
+     *
+{{/summary}}
+{{#description}}
+     * {{.}}
+     *
+{{/description}}
+{{#exts.x-group-parameters}}
+     * Note: the input parameter is an associative array with the keys listed as the parameter name below
+     *
+{{/exts.x-group-parameters}}
+{{#servers}}
+{{#-first}}
+     * This operation contains host(s) defined in the OpenAPI spec. Use 'hostIndex' to select the host.
+     * if needed, use the 'variables' parameter to pass variables to the host.
+{{/-first}}
+     * URL: {{{url}}}
+{{#variables}}
+{{#-first}}
+     *  Variables:
+{{/-first}}
+     *    - {{{name}}}: {{{description}}}{{^description}} No description provided{{/description}}{{#enumValues}}
+{{#-first}}
+     *      Allowed values:
+{{/-first}}
+     *        - {{{.}}}{{/enumValues}}
+{{/variables}}
+{{#-last}}
+     *
+{{/-last}}
+{{/servers}}
+{{#allParams}}
+     * @param  {{{dataType}}}{{#notRequiredOrIsNullable}}|null{{/notRequiredOrIsNullable}} ${{paramName}}{{#description}} {{.}}{{/description}} {{#required}}(required){{/required}}{{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{#isDeprecated}} (deprecated){{/isDeprecated}}
+{{/allParams}}
+{{#servers}}
+{{#-first}}
+     * @param  null|int $hostIndex Host index. Defaults to null. If null, then the library will use $this->hostIndex instead
+     * @param  array $variables Associative array of variables to pass to the host. Defaults to empty array.
+{{/-first}}
+{{/servers}}
+     * @param  string $contentType The value for the Content-Type header. Check self::contentTypes['{{{operationId}}}'] to see the possible values for this operation
+     *
+     * @throws \InvalidArgumentException
+     * @return \GuzzleHttp\Promise\PromiseInterface
+    {{#isDeprecated}}
+     * @deprecated
+    {{/isDeprecated}}
+     */
+    public function {{operationId}}AsyncWithHttpInfo({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}{{^required}} = {{#defaultValue}}{{{.}}}{{/defaultValue}}{{^defaultValue}}null{{/defaultValue}}{{/required}}, {{/allParams}}{{#servers}}{{#-first}}?int $hostIndex = null, array $variables = [], {{/-first}}{{/servers}}string $contentType = self::contentTypes['{{{operationId}}}'][0]{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}})
+    {
+        $returnType = '{{{returnType}}}';
+        $request = $this->{{operationId}}Request({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}, {{/allParams}}{{#servers}}{{#-first}}$hostIndex, $variables, {{/-first}}{{/servers}}$contentType{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}});
+
+        return $this->client
+            ->sendAsync($request, $this->createHttpClientOption())
+            ->then(
+                function ($response) use ($returnType) {
+                    {{#returnType}}
+                    if ($returnType === '\SplFileObject') {
+                        $content = $response->getBody(); //stream goes to serializer
+                    } else {
+                        $content = (string) $response->getBody();
+                        if ($returnType !== 'string') {
+                            $content = json_decode($content);
+                        }
+                    }
+
+                    return [
+                        ObjectSerializer::deserialize($content, $returnType, []),
+                        $response->getStatusCode(),
+                        $response->getHeaders()
+                    ];
+                    {{/returnType}}
+                    {{^returnType}}
+                    return [null, $response->getStatusCode(), $response->getHeaders()];
+                    {{/returnType}}
+                },
+                function ($exception) {
+                    $response = $exception->getResponse();
+                    $statusCode = $response->getStatusCode();
+                    throw new ApiException(
+                        sprintf(
+                            '[%d] Error connecting to the API (%s)',
+                            $statusCode,
+                            $exception->getRequest()->getUri()
+                        ),
+                        $statusCode,
+                        $response->getHeaders(),
+                        (string) $response->getBody()
+                    );
+                }
+            );
+    }
+
+    /**
+     * Create request for operation '{{{operationId}}}'
+     *
+{{#exts.x-group-parameters}}
+     * Note: the input parameter is an associative array with the keys listed as the parameter name below
+     *
+{{/exts.x-group-parameters}}
+{{#servers}}
+{{#-first}}
+    * This operation contains host(s) defined in the OpenAPI spec. Use 'hostIndex' to select the host.
+    * if needed, use the 'variables' parameter to pass variables to the host.
+{{/-first}}
+     * URL: {{{url}}}
+{{#variables}}
+{{#-first}}
+     *  Variables:
+{{/-first}}
+    *    - {{{name}}}: {{{description}}}{{^description}} No description provided{{/description}}{{#enumValues}}
+{{#-first}}
+     *      Allowed values:
+{{/-first}}
+     *        - {{{.}}}{{/enumValues}}
+{{/variables}}
+{{#-last}}
+     *
+{{/-last}}
+{{/servers}}
+{{#allParams}}
+     * @param  {{{dataType}}}{{#notRequiredOrIsNullable}}|null{{/notRequiredOrIsNullable}} ${{paramName}}{{#description}} {{.}}{{/description}} {{#required}}(required){{/required}}{{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{#isDeprecated}} (deprecated){{/isDeprecated}}
+{{/allParams}}
+{{#servers}}
+{{#-first}}
+     * @param  null|int $hostIndex Host index. Defaults to null. If null, then the library will use $this->hostIndex instead
+     * @param  array $variables Associative array of variables to pass to the host. Defaults to empty array.
+{{/-first}}
+{{/servers}}
+     * @param  string $contentType The value for the Content-Type header. Check self::contentTypes['{{{operationId}}}'] to see the possible values for this operation
+     *
+     * @throws \InvalidArgumentException
+     * @return \GuzzleHttp\Psr7\Request
+    {{#isDeprecated}}
+     * @deprecated
+    {{/isDeprecated}}
+     */
+    public function {{operationId}}Request({{^exts.x-group-parameters}}{{#allParams}}${{paramName}}{{^required}} = {{#defaultValue}}{{{.}}}{{/defaultValue}}{{^defaultValue}}null{{/defaultValue}}{{/required}}, {{/allParams}}{{#servers}}{{#-first}}?int $hostIndex = null, array $variables = [], {{/-first}}{{/servers}}string $contentType = self::contentTypes['{{{operationId}}}'][0]{{/exts.x-group-parameters}}{{#exts.x-group-parameters}}$associative_array{{/exts.x-group-parameters}})
+    {
+        {{#exts.x-group-parameters}}
+        // unbox the parameters from the associative array
+{{#allParams}}
+        ${{paramName}} = array_key_exists('{{paramName}}', $associative_array) ? $associative_array['{{paramName}}'] : {{{defaultValue}}}{{^defaultValue}}null{{/defaultValue}};
+{{/allParams}}{{#servers.0}}
+        $hostIndex = $associative_array['hostIndex'];
+        $variables = array_key_exists('variables', $associative_array) ? $associative_array['variables'] : [];
+{{/servers.0}}
+        $contentType = $associative_array['contentType'] ?? self::contentTypes['{{{operationId}}}'][0];
+        {{/exts.x-group-parameters}}{{#allParams}}
+        {{#required}}
+        // verify the required parameter '{{paramName}}' is set
+        if (${{paramName}} === null || (is_array(${{paramName}}) && count(${{paramName}}) === 0)) {
+            throw new \InvalidArgumentException(
+                'Missing the required parameter ${{paramName}} when calling {{operationId}}'
+            );
+        }
+        {{/required}}
+        {{#hasValidation}}
+        {{#maxLength}}
+        if ({{^required}}${{paramName}} !== null && {{/required}}strlen(${{paramName}}) > {{maxLength}}) {
+            throw new \InvalidArgumentException('invalid length for "${{paramName}}" when calling {{classname}}.{{operationId}}, must be smaller than or equal to {{maxLength}}.');
+        }
+        {{/maxLength}}
+        {{#minLength}}
+        if ({{^required}}${{paramName}} !== null && {{/required}}strlen(${{paramName}}) < {{minLength}}) {
+            throw new \InvalidArgumentException('invalid length for "${{paramName}}" when calling {{classname}}.{{operationId}}, must be bigger than or equal to {{minLength}}.');
+        }
+        {{/minLength}}
+        {{#maximum}}
+        if ({{^required}}${{paramName}} !== null && {{/required}}${{paramName}} >{{#exclusiveMaximum}}={{/exclusiveMaximum}} {{maximum}}) {
+            throw new \InvalidArgumentException('invalid value for "${{paramName}}" when calling {{classname}}.{{operationId}}, must be smaller than {{^exclusiveMaximum}}or equal to {{/exclusiveMaximum}}{{maximum}}.');
+        }
+        {{/maximum}}
+        {{#minimum}}
+        if ({{^required}}${{paramName}} !== null && {{/required}}${{paramName}} <{{#exclusiveMinimum}}={{/exclusiveMinimum}} {{minimum}}) {
+            throw new \InvalidArgumentException('invalid value for "${{paramName}}" when calling {{classname}}.{{operationId}}, must be bigger than {{^exclusiveMinimum}}or equal to {{/exclusiveMinimum}}{{minimum}}.');
+        }
+        {{/minimum}}
+        {{#pattern}}
+        if ({{^required}}${{paramName}} !== null && {{/required}}!preg_match("{{{pattern}}}", ${{paramName}})) {
+            throw new \InvalidArgumentException("invalid value for \"{{paramName}}\" when calling {{classname}}.{{operationId}}, must conform to the pattern {{{pattern}}}.");
+        }
+        {{/pattern}}
+        {{#maxItems}}
+        if ({{^required}}${{paramName}} !== null && {{/required}}count(${{paramName}}) > {{maxItems}}) {
+            throw new \InvalidArgumentException('invalid value for "${{paramName}}" when calling {{classname}}.{{operationId}}, number of items must be less than or equal to {{maxItems}}.');
+        }
+        {{/maxItems}}
+        {{#minItems}}
+        if ({{^required}}${{paramName}} !== null && {{/required}}count(${{paramName}}) < {{minItems}}) {
+            throw new \InvalidArgumentException('invalid value for "${{paramName}}" when calling {{classname}}.{{operationId}}, number of items must be greater than or equal to {{minItems}}.');
+        }
+        {{/minItems}}
+        {{/hasValidation}}{{/allParams}}
+
+        $resourcePath = '{{{path}}}';
+        $formParams = [];
+        $queryParams = [];
+        $headerParams = [];
+        $httpBody = '';
+        $multipart = false;
+
+        {{#queryParams}}
+        // query params
+        $queryParams = array_merge($queryParams, ObjectSerializer::toQueryValue(
+            ${{paramName}},
+            '{{baseName}}', // param base name
+            '{{#schema}}{{openApiType}}{{/schema}}', // openApiType
+            '{{style}}', // style
+            {{#isExplode}}true{{/isExplode}}{{^isExplode}}false{{/isExplode}}, // explode
+            {{required}} // required
+        ) ?? []);
+        {{/queryParams}}
+
+        {{#headerParams}}
+        // header params
+        {{#collectionFormat}}
+        if (is_array(${{paramName}})) {
+            ${{paramName}} = ObjectSerializer::serializeCollection(${{paramName}}, '{{collectionFormat}}');
+        }
+        {{/collectionFormat}}
+        if (${{paramName}} !== null) {
+            $headerParams['{{baseName}}'] = ObjectSerializer::toHeaderValue(${{paramName}});
+        }
+        {{/headerParams}}
+
+        {{#pathParams}}
+        // path params
+        {{#collectionFormat}}
+        if (is_array(${{paramName}})) {
+            ${{paramName}} = ObjectSerializer::serializeCollection(${{paramName}}, '{{collectionFormat}}');
+        }
+        {{/collectionFormat}}
+        if (${{paramName}} !== null) {
+            $resourcePath = str_replace(
+                '{' . '{{baseName}}' . '}',
+                ObjectSerializer::toPathValue(${{paramName}}),
+                $resourcePath
+            );
+        }
+        {{/pathParams}}
+
+        {{#formParams}}
+        {{#-first}}
+        // form params
+        $formDataProcessor = new FormDataProcessor();
+
+        $formData = $formDataProcessor->prepare([
+        {{/-first}}
+            '{{baseName}}' => ${{paramName}},
+        {{#-last}}
+        ]);
+
+        $formParams = $formDataProcessor->flatten($formData);
+        $multipart = $formDataProcessor->has_file;
+        {{/-last}}
+        {{/formParams}}
+
+        {{#isMultipart}}
+        $multipart = true;
+        {{/isMultipart}}
+        $headers = $this->headerSelector->selectHeaders(
+            [{{#produces}}'{{{mediaType}}}', {{/produces}}],
+            $contentType,
+            $multipart
+        );
+
+        // for model (json/xml)
+        {{#bodyParams}}
+        if (isset(${{paramName}})) {
+            if (stripos($headers['Content-Type'], 'application/json') !== false) {
+                # if Content-Type contains "application/json", json_encode the body
+                $httpBody = \GuzzleHttp\Utils::jsonEncode(ObjectSerializer::sanitizeForSerialization(${{paramName}}));
+            } else {
+                $httpBody = ${{paramName}};
+            }
+        } elseif (count($formParams) > 0) {
+        {{/bodyParams}}
+        {{^bodyParams}}
+        if (count($formParams) > 0) {
+        {{/bodyParams}}
+            if ($multipart) {
+                $multipartContents = [];
+                foreach ($formParams as $formParamName => $formParamValue) {
+                    $formParamValueItems = is_array($formParamValue) ? $formParamValue : [$formParamValue];
+                    foreach ($formParamValueItems as $formParamValueItem) {
+                        $multipartContents[] = [
+                            'name' => $formParamName,
+                            'contents' => $formParamValueItem
+                        ];
+                    }
+                }
+                // for HTTP post (form)
+                $httpBody = new MultipartStream($multipartContents);
+
+            } elseif (stripos($headers['Content-Type'], 'application/json') !== false) {
+                # if Content-Type contains "application/json", json_encode the form parameters
+                $httpBody = \GuzzleHttp\Utils::jsonEncode($formParams);
+            } else {
+                // for HTTP post (form)
+                $httpBody = ObjectSerializer::buildQuery($formParams);
+            }
+        }
+
+        {{#authMethods}}
+        {{#isApiKey}}
+        {{^isKeyInCookie}}
+        // this endpoint requires API key authentication
+        $apiKey = $this->config->getApiKeyWithPrefix('{{keyParamName}}');
+        if ($apiKey !== null) {
+            {{#isKeyInHeader}}$headers['{{keyParamName}}'] = $apiKey;{{/isKeyInHeader}}{{#isKeyInQuery}}$queryParams['{{keyParamName}}'] = $apiKey;{{/isKeyInQuery}}
+        }
+        {{/isKeyInCookie}}
+        {{/isApiKey}}
+        {{#isBasic}}
+        {{#isBasicBasic}}
+        // this endpoint requires HTTP basic authentication
+        if (!empty($this->config->getUsername()) || !(empty($this->config->getPassword()))) {
+            $headers['Authorization'] = 'Basic ' . base64_encode($this->config->getUsername() . ":" . $this->config->getPassword());
+        }
+        {{/isBasicBasic}}
+        {{#isBasicBearer}}
+        // this endpoint requires Bearer{{#bearerFormat}} ({{{.}}}){{/bearerFormat}} authentication (access token)
+        if (!empty($this->config->getAccessToken())) {
+            $headers['Authorization'] = 'Bearer ' . $this->config->getAccessToken();
+        }
+        {{/isBasicBearer}}
+        {{/isBasic}}
+        {{#isOAuth}}
+        // this endpoint requires OAuth (access token)
+        if (!empty($this->config->getAccessToken())) {
+            $headers['Authorization'] = 'Bearer ' . $this->config->getAccessToken();
+        }
+        {{/isOAuth}}
+        {{/authMethods}}
+
+        $defaultHeaders = [];
+        if ($this->config->getUserAgent()) {
+            $defaultHeaders['User-Agent'] = $this->config->getUserAgent();
+        }
+
+        $headers = array_merge(
+            $defaultHeaders,
+            $headerParams,
+            $headers
+        );
+
+        {{#servers.0}}
+        # Preserve the original behavior of server indexing.
+        if ($hostIndex === null) {
+            $hostIndex = $this->hostIndex;
+        }
+
+        $hostSettings = $this->getHostSettingsFor{{operationId}}();
+
+        if ($hostIndex < 0 || $hostIndex >= count($hostSettings)) {
+            throw new \InvalidArgumentException("Invalid index {$hostIndex} when selecting the host. Must be less than ".count($hostSettings));
+        }
+        $operationHost = Configuration::getHostString($hostSettings, $hostIndex, $variables);
+        {{/servers.0}}
+        {{^servers.0}}
+        $operationHost = $this->config->getHost();
+        {{/servers.0}}
+        $query = ObjectSerializer::buildQuery($queryParams);
+        return new Request(
+            '{{httpMethod}}',
+            $operationHost . $resourcePath . ($query ? "?{$query}" : ''),
+            $headers,
+            $httpBody
+        );
+    }
+
+    {{#servers.0}}
+    /**
+     * Returns an array of host settings for Operation {{operationId}}
+     *
+     * @return array an array of host settings
+     */
+    protected function getHostSettingsFor{{operationId}}(): array
+    {
+        return [
+        {{#servers}}
+            [
+                "url" => "{{{url}}}",
+                "description" => "{{{description}}}{{^description}}No description provided{{/description}}",
+                {{#variables}}
+                {{#-first}}
+                "variables" => [
+                {{/-first}}
+                    "{{{name}}}" => [
+                    "description" => "{{{description}}}{{^description}}No description provided{{/description}}",
+                    "default_value" => "{{{defaultValue}}}",
+                    {{#enumValues}}
+                    {{#-first}}
+                    "enum_values" => [
+                    {{/-first}}
+                        "{{{.}}}",
+                    {{#-last}}
+                    ]
+                    {{/-last}}
+                    {{/enumValues}}
+                    ]{{^-last}},{{/-last}}
+                {{#-last}}
+                ]
+                {{/-last}}
+                {{/variables}}
+            ]{{^-last}},{{/-last}}
+        {{/servers}}
+        ];
+    }
+
+    {{/servers.0}}
+    {{/operation}}
+    /**
+     * Create http client option
+     *
+     * @throws \RuntimeException on file opening failure
+     * @return array of http client options
+     */
+    protected function createHttpClientOption()
+    {
+        $options = [];
+        if ($this->config->getDebug()) {
+            $options[RequestOptions::DEBUG] = fopen($this->config->getDebugFile(), 'a');
+            if (!$options[RequestOptions::DEBUG]) {
+                throw new \RuntimeException('Failed to open the debug file: ' . $this->config->getDebugFile());
+            }
+        }
+
+        if ($this->config->getCertFile()) {
+            $options[RequestOptions::CERT] = $this->config->getCertFile();
+        }
+
+        if ($this->config->getKeyFile()) {
+            $options[RequestOptions::SSL_KEY] = $this->config->getKeyFile();
+        }
+
+        return $options;
+    }
+
+    private function handleResponseWithDataType(
+        string $dataType,
+        RequestInterface $request,
+        ResponseInterface $response
+    ): array {
+        if ($dataType === '\SplFileObject') {
+            $content = $response->getBody(); //stream goes to serializer
+        } else {
+            $content = (string) $response->getBody();
+            if ($dataType !== 'string') {
+                try {
+                    $content = json_decode($content, false, 512, JSON_THROW_ON_ERROR);
+                } catch (\JsonException $exception) {
+                    throw new ApiException(
+                        sprintf(
+                            'Error JSON decoding server response (%s)',
+                            $request->getUri()
+                        ),
+                        $response->getStatusCode(),
+                        $response->getHeaders(),
+                        $content
+                    );
+                }
+            }
+        }
+
+        return [
+            ObjectSerializer::deserialize($content, $dataType, []),
+            $response->getStatusCode(),
+            $response->getHeaders()
+        ];
+    }
+
+    private function responseWithinRangeCode(
+        string $rangeCode,
+        int $statusCode
+    ): bool {
+        $left = (int) ($rangeCode[0].'00');
+        $right = (int) ($rangeCode[0].'99');
+
+        return $statusCode >= $left && $statusCode <= $right;
+    }
+}
+{{/operations}}