/**
  * @param \Sonata\PageBundle\Model\SnapshotManagerInterface $pageManager
  * @param \Symfony\Component\Templating\EngineInterface $templating
  * @param \Sonata\PageBundle\Cache\Invalidation\InvalidationInterface $cacheInvalidation
  * @param \Symfony\Component\Routing\RouterInterface $router
  */
 public function __construct(EngineInterface $templating, InvalidationInterface $cacheInvalidation, RouterInterface $router, array $httpErrorCodes = array(), SnapshotManagerInterface $pageManager)
 {
     parent::__construct($templating, $cacheInvalidation, $router, $httpErrorCodes);
     $this->pageManager = $pageManager;
 }