Neos\Media\Domain\Service\ThumbnailService::refreshThumbnail PHP Метод

    public function refreshThumbnail(Thumbnail $thumbnail)
    {
        $thumbnail->refresh();
        $this->persistenceManager->whiteListObject($thumbnail);
        if (!$this->persistenceManager->isNewObject($thumbnail)) {
            $this->thumbnailRepository->update($thumbnail);
        }
    }

 /**
  * Generate thumbnail and redirect to resource URI
  *
  * @param Thumbnail $thumbnail
  * @return void
  */
 public function thumbnailAction(Thumbnail $thumbnail)
 {
     if ($thumbnail->getResource() === null && $thumbnail->getStaticResource() === null) {
         $this->thumbnailService->refreshThumbnail($thumbnail);
     }
     $this->redirectToUri($this->thumbnailService->getUriForThumbnail($thumbnail), 0, 302);
 }