/**
  * @param BundleInterface $bundle
  * @param ContainerBuilder $container
  * @param array $configs
  */
 protected function loadExtension(BundleInterface $bundle, ContainerBuilder $container, array $configs)
 {
     $extension = $bundle->getContainerExtension();
     if (!$extension) {
         return;
     }
     $config = array_key_exists($extension->getAlias(), $configs) ? $configs[$extension->getAlias()] : array();
     $extension->load(array($config), $container);
 }