@@ -101,7 +101,7 @@ public async Task<HttpResponseMessage> DoHttpRequestAsync(string methodType, Sdk
101101 while ( true )
102102 {
103103 var url = GetRealEndpoint ( request ) + HttpUtils . AddUrlPath ( request . Path , _credentials . GetPathParamDictionary ( ) )
104- + ( string . IsNullOrEmpty ( request . QueryParams ) ? "" : "?" + request . QueryParams ) ;
104+ + ( string . IsNullOrEmpty ( request . QueryParams ) ? string . Empty : "?" + request . QueryParams ) ;
105105 try
106106 {
107107 return await _async_http ( url , methodType . ToUpperInvariant ( ) , request ) ;
@@ -192,7 +192,7 @@ public HttpResponseMessage DoHttpRequestSync(string methodType, SdkRequest reque
192192 while ( true )
193193 {
194194 var url = GetRealEndpoint ( request ) + HttpUtils . AddUrlPath ( request . Path , _credentials . GetPathParamDictionary ( ) )
195- + ( string . IsNullOrEmpty ( request . QueryParams ) ? "" : "?" + request . QueryParams ) ;
195+ + ( string . IsNullOrEmpty ( request . QueryParams ) ? string . Empty : "?" + request . QueryParams ) ;
196196 try
197197 {
198198 return _sync_http ( url , methodType . ToUpperInvariant ( ) , request ) ;
@@ -231,7 +231,7 @@ private HttpRequest GetHttpRequest(string url, string method, SdkRequest sdkRequ
231231 {
232232 var request = new HttpRequest ( method . ToUpperInvariant ( ) , sdkRequest . ContentType , new Uri ( url ) )
233233 {
234- Body = sdkRequest . Body ?? "" ,
234+ Body = sdkRequest . Body ?? string . Empty ,
235235 FileStream = sdkRequest . FileStream ,
236236 FormData = sdkRequest . FormData ,
237237 SigningAlgorithm = _httpConfig . SigningAlgorithm
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