-        $loader = new Loader\YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
-        $loader->load('services.yml');
-    }
+               //Process the configuration to get merged config
+               $config = $this->processConfiguration($configuration, $configs);
+
+               //Detect when no user configuration is provided
+               if ($configs === [[]]) {
+                       //Prepend default config
+                       $container->prependExtensionConfig($this->getAlias(), $config);
+               }
+
+               //Save configuration in parameters
+               $container->setParameter($this->getAlias(), $config);
+       }
+
+       /**
+        * {@inheritdoc}
+        */
+       public function getAlias() {
+               return 'rapsys_pack';
+       }