/**
  * Create service
  *
  * @param ServiceLocatorInterface $serviceLocator
  * @return mixed
  */
 public function createService(ServiceLocatorInterface $serviceLocator)
 {
     $realLocator = $serviceLocator->getServceLocator();
     $postService = $realLocator->get('Blog\\Service\\PostServiceInterface');
     return new DeleteController($postService);
 }