Added an OpenAPI validation target and license headers.

Tests/ASConnectService/Cases/Public/Providers/APIKeyTokenProviderTests.swift

@@ -1,3 +1,17 @@
+// ===----------------------------------------------------------------------===
+//
+// This source file is part of the ASConnectService open source project
+//
+// Copyright (c) 2026 Röck+Cöde VoF. and the ASConnectService project authors
+// Licensed under Apache license v2.0
+//
+// See LICENSE for license information
+// See CONTRIBUTORS for the list of ASConnectService project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// ===----------------------------------------------------------------------===
+
 #if canImport(CryptoKit)
 import CryptoKit
 import Foundation
@@ -96,9 +110,8 @@ private extension APIKeyTokenProviderTests {
         try #require(parts.count == 3)
 
         let header = try JSONDecoder().decode([String: String].self, from: try #require(Data(base64URL: parts[0])))
-        let payload = try #require(
-            try JSONSerialization.jsonObject(with: try #require(Data(base64URL: parts[1]))) as? [String: Any]
-        )
+        let payloadData = try #require(Data(base64URL: parts[1]))
+        let payload = try #require(try JSONSerialization.jsonObject(with: payloadData) as? [String: Any])
 
         return (header, payload)
     }