diff --git a/src/OpenApi/Tests/fixtures/api-platform-demo/expected/Authentication/ApiKeyAuthentication.php b/src/OpenApi/Tests/fixtures/api-platform-demo/expected/Authentication/ApiKeyAuthentication.php
new file mode 100644
index 0000000000..302fab0a97
--- /dev/null
+++ b/src/OpenApi/Tests/fixtures/api-platform-demo/expected/Authentication/ApiKeyAuthentication.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace ApiPlatform\Demo\Authentication;
+
+class ApiKeyAuthentication implements \Jane\OpenApiRuntime\Client\Authentication
+{
+    private $apiKey;
+    public function __construct(string $apiKey)
+    {
+        $this->{'apiKey'} = $apiKey;
+    }
+    public function getPlugin() : \Http\Client\Common\Plugin
+    {
+        return new \Http\Client\Common\Plugin\AuthenticationPlugin(new class($this->{'apiKey'}) implements \Http\Message\Authentication
+        {
+            private $apiKey;
+            public function __construct(string $apiKey)
+            {
+                $this->{'apiKey'} = $apiKey;
+            }
+            public function authenticate(\Psr\Http\Message\RequestInterface $request)
+            {
+                return $request->withHeader('Authorization', $this->{'apiKey'});
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/src/OpenApi/Tests/fixtures/api-platform-demo/expected/Client.php b/src/OpenApi/Tests/fixtures/api-platform-demo/expected/Client.php
index f9e81dc13f..b9d286f66e 100644
--- a/src/OpenApi/Tests/fixtures/api-platform-demo/expected/Client.php
+++ b/src/OpenApi/Tests/fixtures/api-platform-demo/expected/Client.php
@@ -288,10 +288,15 @@ public function putReviewItem(string $id, $requestBody, string $fetch = self::FE
     {
         return $this->executePsr7Endpoint(new \ApiPlatform\Demo\Endpoint\PutReviewItem($id, $requestBody), $fetch);
     }
-    public static function create($httpClient = null)
+    public static function create($httpClient = null, \Jane\OpenApiRuntime\Client\Authentication $authentication = null)
     {
         if (null === $httpClient) {
             $httpClient = \Http\Discovery\HttpClientDiscovery::find();
+            $plugins = array();
+            if (null !== $authentication) {
+                $plugins[] = $authentication->getPlugin();
+            }
+            $httpClient = new \Http\Client\Common\PluginClient($httpClient, $plugins);
         }
         $messageFactory = \Http\Discovery\MessageFactoryDiscovery::find();
         $streamFactory = \Http\Discovery\StreamFactoryDiscovery::find();