Api class

src/Client/ApiClientOptions.php

@@ -29,4 +29,9 @@ interface ApiClientOptions extends HttpClientOptions, SerializerOptions
      */
     public function isCachedClient();
 
+    /**
+     * @return string
+     */
+    public function getApiClientClass();
+
 }
\ No newline at end of file

src/Client/ClientFactory.php

@@ -17,7 +17,9 @@ class ClientFactory
         $httpClientFactory = new HttpClientFactory();
         $serializerFactory = new SerializerFactory();
 
-        $client = new ClientImplementation(
+        $className = $options->getApiClientClass();
+
+        $client = new $className(
             $httpClientFactory->createClient($options),
             $serializerFactory->createSerializer($options),
             $options->getLogger(),