/**
  * @param ContentInterface $content
  */
 public function restore($content)
 {
     $contents = $this->contentRepository->findByContentId($content->getContentId());
     /** @var ContentInterface $content */
     foreach ($contents as $content) {
         $content->setDeleted(false);
     }
     $this->eventDispatcher->dispatch(ContentEvents::CONTENT_RESTORE, new ContentEvent($content));
 }