protected static function sortFileList(array $a, array $b)
  {
    if(!array_key_exists("src", $a) || !array_key_exists("src", $b))
    {
      return 0;

      throw new \ManiaLivePlugins\Standard\TeamSpeak\TeamSpeak3\Adapter\ServerQuery\Exception("invalid parameter", 0x602);
    }

    return strcmp(strtolower($a["src"]), strtolower($b["src"]));
  }