Neos\Media\Domain\Model\Thumbnail::getOriginalAsset PHP Метод

    public function getOriginalAsset()
    {
        return $this->originalAsset;
    }

 /**
  * @param Thumbnail $thumbnail
  * @return void
  * @throws Exception\NoThumbnailAvailableException
  */
 public function refresh(Thumbnail $thumbnail)
 {
     $temporaryPathAndFilename = null;
     try {
         $filename = pathinfo($thumbnail->getOriginalAsset()->getResource()->getFilename(), PATHINFO_FILENAME);
         $temporaryLocalCopyFilename = $thumbnail->getOriginalAsset()->getResource()->createTemporaryLocalCopy();
         $temporaryPathAndFilename = $this->environment->getPathToTemporaryDirectory() . uniqid('ProcessedFontThumbnail-') . '.' . $filename . '.jpg';
         $width = 1000;
         $height = 1000;
         $im = imagecreate($width, $height);
         $red = imagecolorallocate($im, 0xff, 0xff, 0xff);
         $black = imagecolorallocate($im, 0x0, 0x0, 0x0);
         imagefilledrectangle($im, 0, 0, $width, $height, $red);
         imagefttext($im, 48, 0, 80, 150, $black, $temporaryLocalCopyFilename, 'Neos Font Preview');
         imagefttext($im, 32, 0, 80, 280, $black, $temporaryLocalCopyFilename, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ');
         imagefttext($im, 32, 0, 80, 360, $black, $temporaryLocalCopyFilename, 'abcdefghijklmopqrstuvwxyz');
         imagefttext($im, 32, 0, 80, 440, $black, $temporaryLocalCopyFilename, '1234567890');
         imagefttext($im, 32, 0, 80, 560, $black, $temporaryLocalCopyFilename, '+ " * ç % & / ( ) = ? @ €');
         imagejpeg($im, $temporaryPathAndFilename);
         $resource = $this->resourceManager->importResource($temporaryPathAndFilename);
         $processedImageInfo = $this->resize($thumbnail, $resource);
         $thumbnail->setResource($processedImageInfo['resource']);
         $thumbnail->setWidth($processedImageInfo['width']);
         $thumbnail->setHeight($processedImageInfo['height']);
         Files::unlink($temporaryPathAndFilename);
     } catch (\Exception $exception) {
         Files::unlink($temporaryPathAndFilename);
         $filename = $thumbnail->getOriginalAsset()->getResource()->getFilename();
         $sha1 = $thumbnail->getOriginalAsset()->getResource()->getSha1();
         $message = sprintf('Unable to generate thumbnail for the given font (filename: %s, SHA1: %s)', $filename, $sha1);
         throw new Exception\NoThumbnailAvailableException($message, 1433109653, $exception);
     }
 }