[swift][client] fix xcode warning (#13647)

* [swift][client] fix xcode warning

* [swift][client] fix xcode warning

Author: 4brunu

modules/openapi-generator/src/main/resources/swift5/Models.mustache

@@ -106,15 +106,20 @@ extension NullEncodable: Codable where Wrapped: Codable {
     }
 }
 
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} final class RequestTask {
+{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} final class RequestTask{{#useAsyncAwait}}: @unchecked Sendable{{/useAsyncAwait}} {
+    private var lock = NSRecursiveLock()
 {{#useAlamofire}}
     private var request: Request?
 
     internal func set(request: Request) {
+        lock.lock()
+        defer { lock.unlock() }
         self.request = request
     }
 
     {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func cancel() {
+        lock.lock()
+        defer { lock.unlock() }
         request?.cancel()
         request = nil
     }
@@ -123,10 +128,14 @@ extension NullEncodable: Codable where Wrapped: Codable {
     private var task: URLSessionTask?
 
     internal func set(task: URLSessionTask) {
+        lock.lock()
+        defer { lock.unlock() }
         self.task = task
     }
 
     {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func cancel() {
+        lock.lock()
+        defer { lock.unlock() }
         task?.cancel()
         task = nil
     }

modules/openapi-generator/src/main/resources/swift5/api.mustache

@@ -211,7 +211,8 @@ extension {{projectName}}API {
     {{/isDeprecated}}
     @available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
     {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func {{operationId}}({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}[{{enumName}}_{{operationId}}]{{/isContainer}}{{^isContainer}}{{enumName}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) async throws{{#returnType}} -> {{{returnType}}}{{#returnType}}{{#isResponseOptional}}?{{/isResponseOptional}}{{/returnType}}{{/returnType}} {
-        var requestTask: RequestTask?
+        let requestBuilder = {{operationId}}WithRequestBuilder({{#allParams}}{{paramName}}: {{paramName}}{{^-last}}, {{/-last}}{{/allParams}})
+        let requestTask = requestBuilder.requestTask
         return try await withTaskCancellationHandler {
             try Task.checkCancellation()
             return try await withCheckedThrowingContinuation { continuation in
@@ -220,7 +221,7 @@ extension {{projectName}}API {
                   return
                 }
 
-                requestTask = {{operationId}}WithRequestBuilder({{#allParams}}{{paramName}}: {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).execute { result in
+                requestBuilder.execute { result in
                     switch result {
                     {{#returnType}}
                     case let .success(response):
@@ -235,8 +236,8 @@ extension {{projectName}}API {
                     }
                 }
             }
-        } onCancel: { [requestTask] in
-            requestTask?.cancel()
+        } onCancel: {
+            requestTask.cancel()
         }
     }
 {{/useAsyncAwait}}

samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models.swift

@@ -107,13 +107,18 @@ open class Response<T> {
 }
 
 public final class RequestTask {
+    private var lock = NSRecursiveLock()
     private var request: Request?
 
     internal func set(request: Request) {
+        lock.lock()
+        defer { lock.unlock() }
         self.request = request
     }
 
     public func cancel() {
+        lock.lock()
+        defer { lock.unlock() }
         request?.cancel()
         request = nil
     }

samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/APIs/AnotherFakeAPI.swift

@@ -20,7 +20,8 @@ open class AnotherFakeAPI {
      */
     @available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
     open class func call123testSpecialTags(body: Client) async throws -> Client {
-        var requestTask: RequestTask?
+        let requestBuilder = call123testSpecialTagsWithRequestBuilder(body: body)
+        let requestTask = requestBuilder.requestTask
         return try await withTaskCancellationHandler {
             try Task.checkCancellation()
             return try await withCheckedThrowingContinuation { continuation in
@@ -29,7 +30,7 @@ open class AnotherFakeAPI {
                   return
                 }
 
-                requestTask = call123testSpecialTagsWithRequestBuilder(body: body).execute { result in
+                requestBuilder.execute { result in
                     switch result {
                     case let .success(response):
                         continuation.resume(returning: response.body)
@@ -38,8 +39,8 @@ open class AnotherFakeAPI {
                     }
                 }
             }
-        } onCancel: { [requestTask] in
-            requestTask?.cancel()
+        } onCancel: {
+            requestTask.cancel()
         }
     }