private function removeFile(File $file)
	{
		$this->removeFileInFileSystem($file);

		if ($file instanceof Image) {
			$em = $this->getDoctrineEntityManager();
			$imageSizeCn = ImageSize::CN();
			$em->createQuery("DELETE FROM $imageSizeCn s WHERE s.master = :master")
				->setParameter('master', $file->getId())
				->execute();
		}

		$entityManager = $this->getDoctrineEntityManager();
		$entityManager->remove($file);
		$entityManager->flush();
	}