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grpc: Add KMP sample project (#474)
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‎grpc/grpc-core/src/nativeMain/kotlin/kotlinx/rpc/grpc/internal/utils.kt‎

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@@ -189,7 +189,8 @@ internal fun grpc_status_code.toKotlin(): StatusCode = when (this) {
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grpc_status_code.GRPC_STATUS_UNAVAILABLE -> StatusCode.UNAVAILABLE
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grpc_status_code.GRPC_STATUS_DATA_LOSS -> StatusCode.DATA_LOSS
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grpc_status_code.GRPC_STATUS_UNAUTHENTICATED -> StatusCode.UNAUTHENTICATED
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grpc_status_code.GRPC_STATUS__DO_NOT_USE -> error("Invalid status code: ${this.ordinal}")
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grpc_status_code.GRPC_STATUS__DO_NOT_USE -> error("Invalid status code: $this")
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else -> error("Invalid status code: $this")
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}
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internal fun StatusCode.toRawCallAllocation(): grpc_status_code = when (this) {

‎protobuf/protobuf-core/build.gradle.kts‎

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@@ -86,3 +86,14 @@ tasks.withType<BufGenerateTask>().configureEach {
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outputDirectory = generatedCodeDir
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}
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}
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// TODO: What is the correct way to declare this dependency? (KRPC-223)
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// (without it fails when executing "publishAllPublicationsToBuildRepository")"
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val bufGenerateCommonMain = tasks.named("bufGenerateCommonMain")
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tasks.withType<org.gradle.jvm.tasks.Jar>().configureEach {
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// Only for sources jars
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if (archiveClassifier.orNull == "sources" || name.endsWith("SourcesJar")) {
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dependsOn(bufGenerateCommonMain)
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}
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}

‎samples/grpc-kmp-app/.gitignore‎

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*.iml
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.kotlin
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.gradle
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**/build/
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xcuserdata
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!src/**/build/
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local.properties
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.idea
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.DS_Store
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captures
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.externalNativeBuild
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.cxx
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*.xcodeproj/*
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!*.xcodeproj/project.pbxproj
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!*.xcodeproj/xcshareddata/
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!*.xcodeproj/project.xcworkspace/
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!*.xcworkspace/contents.xcworkspacedata
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**/xcshareddata/WorkspaceSettings.xcsettings

‎samples/grpc-kmp-app/README.md‎

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This is a Kotlin Multiplatform project targeting iOS, Desktop (JVM), Server, demonstrating the `kotlinx.rpc` library
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for gRPC.
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* [/composeApp](./composeApp/src) is for code that will be shared across Compose Multiplatform applications.
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- [commonMain](./composeApp/src/commonMain/kotlin) contains all the relevant gRPC client application code for all platforms.
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* [/server](./server/src/main/kotlin) is for the gRPC server application.
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* [/shared](./shared/src) is for the code that will be shared between all targets in the project.
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It contains the proto files and the generated code used by both, the server and the client applications.
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### Build and Run Desktop (JVM) Application
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To build and run the development version of the desktop app, use the run configuration from the run widget
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in your IDE’s toolbar or run it directly from the terminal:
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- on macOS/Linux
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```shell
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./gradlew :composeApp:run
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```
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- on Windows
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```shell
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.\gradlew.bat :composeApp:run
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```
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### Build and Run Server
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To build and run the server, use the run configuration from the run widget
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in your IDE’s toolbar or run it directly from the terminal:
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- on macOS/Linux
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```shell
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./gradlew :server:run
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```
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- on Windows
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```shell
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.\gradlew.bat :server:run
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```
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### Build and Run iOS Application
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To build and run the development version of the iOS app, use the run configuration from the run widget
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in your IDE’s toolbar or open the [/iosApp](./iosApp) directory in Xcode and run it from there.
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---
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Learn more about [Kotlin Multiplatform](https://www.jetbrains.com/help/kotlin-multiplatform-dev/get-started.html)…

‎samples/grpc-kmp-app/build.gradle.kts‎

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plugins {
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// this is necessary to avoid the plugins to be loaded multiple times
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// in each subproject's classloader
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alias(libs.plugins.composeHotReload) apply false
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alias(libs.plugins.composeMultiplatform) apply false
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alias(libs.plugins.composeCompiler) apply false
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alias(libs.plugins.kotlinJvm) apply false
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alias(libs.plugins.kotlinMultiplatform) apply false
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alias(libs.plugins.kotlinxRpc) apply false
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}

‎samples/grpc-kmp-app/composeApp/build.gradle.kts‎

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import org.jetbrains.compose.desktop.application.dsl.TargetFormat
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plugins {
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alias(libs.plugins.kotlinMultiplatform)
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alias(libs.plugins.composeMultiplatform)
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alias(libs.plugins.composeCompiler)
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alias(libs.plugins.composeHotReload)
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}
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kotlin {
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listOf(
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iosArm64(),
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iosSimulatorArm64()
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).forEach { iosTarget ->
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iosTarget.binaries.framework {
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baseName = "ComposeApp"
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isStatic = true
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}
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}
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jvm()
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sourceSets {
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commonMain.dependencies {
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implementation(compose.runtime)
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implementation(compose.foundation)
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implementation(compose.material3)
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implementation(compose.ui)
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implementation(compose.components.resources)
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implementation(compose.components.uiToolingPreview)
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implementation(libs.androidx.lifecycle.viewmodelCompose)
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implementation(libs.androidx.lifecycle.runtimeCompose)
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implementation(libs.kotlinx.datetime)
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implementation(libs.kotlinx.rpc.protobuf.core)
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implementation(libs.kotlinx.rpc.grpc.core)
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implementation(libs.grpc.netty)
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implementation(projects.shared)
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}
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commonTest.dependencies {
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implementation(libs.kotlin.test)
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}
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jvmMain.dependencies {
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implementation(compose.desktop.currentOs)
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implementation(libs.kotlinx.coroutinesSwing)
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}
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}
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}
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compose.desktop {
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application {
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mainClass = "kotlinx.rpc.sample.MainKt"
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nativeDistributions {
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targetFormats(TargetFormat.Dmg, TargetFormat.Msi, TargetFormat.Deb)
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packageName = "kotlinx.rpc.sample"
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packageVersion = "1.0.0"
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}
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}
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}

‎samples/grpc-kmp-app/composeApp/src/commonMain/composeResources/drawable/compose-multiplatform.xml‎

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<vector
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:aapt="http://schemas.android.com/aapt"
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android:width="450dp"
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android:height="450dp"
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android:viewportWidth="64"
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android:viewportHeight="64">
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<path
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android:pathData="M56.25,18V46L32,60 7.75,46V18L32,4Z"
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android:fillColor="#6075f2"/>
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<path
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android:pathData="m41.5,26.5v11L32,43V60L56.25,46V18Z"
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android:fillColor="#6b57ff"/>
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<path
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android:pathData="m32,43 l-9.5,-5.5v-11L7.75,18V46L32,60Z">
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<aapt:attr name="android:fillColor">
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<gradient
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android:centerX="23.131"
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android:centerY="18.441"
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android:gradientRadius="42.132"
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android:type="radial">
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<item android:offset="0" android:color="#FF5383EC"/>
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<item android:offset="0.867" android:color="#FF7F52FF"/>
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</gradient>
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</aapt:attr>
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</path>
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<path
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android:pathData="M22.5,26.5 L32,21 41.5,26.5 56.25,18 32,4 7.75,18Z">
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<aapt:attr name="android:fillColor">
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<gradient
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android:startX="44.172"
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android:startY="4.377"
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android:endX="17.973"
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android:endY="34.035"
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android:type="linear">
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<item android:offset="0" android:color="#FF33C3FF"/>
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<item android:offset="0.878" android:color="#FF5383EC"/>
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</gradient>
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</aapt:attr>
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</path>
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<path
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android:pathData="m32,21 l9.526,5.5v11L32,43 22.474,37.5v-11z"
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android:fillColor="#000000"/>
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</vector>

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