From c5a821d8210d2cfd7edef095b4cc3bc11490911e Mon Sep 17 00:00:00 2001
From: Bruno Coelho <4brunu@gmail.com>
Date: Thu, 22 Jan 2026 15:19:52 +0000
Subject: [PATCH] [swift6][client] mark some closures as sendable

---
 .../URLSessionImplementations.mustache           | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 .../URLSessionImplementations.swift              | 16 ++++++++--------
 12 files changed, 96 insertions(+), 96 deletions(-)

diff --git a/modules/openapi-generator/src/main/resources/swift6/libraries/urlsession/URLSessionImplementations.mustache b/modules/openapi-generator/src/main/resources/swift6/libraries/urlsession/URLSessionImplementations.mustache
index 191545c3d70e..7f97dbdd755c 100644
--- a/modules/openapi-generator/src/main/resources/swift6/libraries/urlsession/URLSessionImplementations.mustache
+++ b/modules/openapi-generator/src/main/resources/swift6/libraries/urlsession/URLSessionImplementations.mustache
@@ -242,7 +242,7 @@ fileprivate class URLSessionRequestBuilderConfiguration: @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ fileprivate class URLSessionRequestBuilderConfiguration: @unchecked Sendable {
 }
 
 {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ fileprivate class URLSessionRequestBuilderConfiguration: @unchecked Sendable {
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ extension JSONDataEncoding: ParameterEncoding {}
 }
 
 {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/asyncAwaitLibrary/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/asyncAwaitLibrary/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/asyncAwaitLibrary/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/asyncAwaitLibrary/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/combineDeferredLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/combineDeferredLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/combineDeferredLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/combineDeferredLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/combineLibrary/Sources/CombineLibrary/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/combineLibrary/Sources/CombineLibrary/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/combineLibrary/Sources/CombineLibrary/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/combineLibrary/Sources/CombineLibrary/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/default/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/default/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/default/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/default/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/objcCompatible/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/objcCompatible/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/objcCompatible/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/objcCompatible/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/oneOf/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/oneOf/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/oneOf/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/oneOf/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/resultLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/resultLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
index 06b39a401202..ac134522359d 100644
--- a/samples/client/petstore/swift6/resultLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/resultLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ internal class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendab
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ internal class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendab
 }
 
 internal class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ internal class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionReques
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ internal enum OpenAPIInterceptorRetry {
 }
 
 internal protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 internal class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/urlsessionLibrary/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/urlsessionLibrary/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/urlsessionLibrary/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/urlsessionLibrary/Sources/PetstoreClient/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }
diff --git a/samples/client/petstore/swift6/validation/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift b/samples/client/petstore/swift6/validation/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
index 93bcea293c65..74f69c0063d8 100644
--- a/samples/client/petstore/swift6/validation/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
+++ b/samples/client/petstore/swift6/validation/PetstoreClient/Classes/OpenAPIs/Infrastructure/URLSessionImplementations.swift
@@ -242,7 +242,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
         }
     }
 
-    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is Void.Type:
@@ -320,7 +320,7 @@ open class URLSessionRequestBuilder<T>: RequestBuilder<T>, @unchecked Sendable {
 }
 
 open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBuilder<T>, @unchecked Sendable {
-    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
+    override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, httpResponse: HTTPURLResponse, error: Error?, completion: @Sendable @escaping (_ result: Swift.Result<Response<T>, ErrorResponse>) -> Void) {
 
         switch T.self {
         case is String.Type:
@@ -398,7 +398,7 @@ open class URLSessionDecodableRequestBuilder<T: Decodable>: URLSessionRequestBui
 }
 
 fileprivate final class SessionDelegate: NSObject, URLSessionTaskDelegate {
-    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
+    func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @Sendable @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
 
         var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
 
@@ -458,7 +458,7 @@ private class FormDataEncoding: ParameterEncoding {
 
     let contentTypeForFormPart: (_ fileURL: URL) -> String?
 
-    init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
+    init(contentTypeForFormPart: @Sendable @escaping (_ fileURL: URL) -> String?) {
         self.contentTypeForFormPart = contentTypeForFormPart
     }
 
@@ -712,19 +712,19 @@ public enum OpenAPIInterceptorRetry {
 }
 
 public protocol OpenAPIInterceptor {
-    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, Error>) -> Void)
+    func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, Error>) -> Void)
 
-    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void)
+    func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void)
 }
 
 public class DefaultOpenAPIInterceptor: OpenAPIInterceptor {
     public init() {}
     
-    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @escaping (Result<URLRequest, any Error>) -> Void) {
+    public func intercept<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, completion: @Sendable @escaping (Result<URLRequest, any Error>) -> Void) {
         completion(.success(urlRequest))
     }
     
-    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @escaping (OpenAPIInterceptorRetry) -> Void) {
+    public func retry<T>(urlRequest: URLRequest, urlSession: URLSessionProtocol, requestBuilder: RequestBuilder<T>, data: Data?, response: URLResponse?, error: Error, completion: @Sendable @escaping (OpenAPIInterceptorRetry) -> Void) {
         completion(.dontRetry)
     }
 }