private function getFilename() {
    switch (config('media.config.rename')) {
      case 'transliterate':
        $this->filename_new = \Transliteration::clean_filename($this->filename_original);
        break;
      case 'unique':
        $this->filename_new = md5(microtime() . str_random(5)) .'.'. $this->filename_original;
        break;
      case 'nothing':
        $this->filename_new = $this->file->getClientOriginalName();
        break;
    }

    return $this->fileExistsRename();
  }