/**
  * Clears the cache entries related to the given cache fragments.
  *
  * @param \Doctrine\Common\Collections\ArrayCollection $cache_fragments
  *   The cache fragments to clear.
  */
 protected function clearRenderedCache(ArrayCollection $cache_fragments)
 {
     $cache_object = new RenderCache($cache_fragments, NULL, $this->cacheController);
     $cache_object->clear();
 }