/**
  * Checks if the given virtual command line interface exists by id.
  *
  * @param $id The id used to create the original virtual command line interface.
  *
  * @return bool Returns true if the given $id exists otherwise false.
  */
 static function has_cli($id)
 {
     $cli_list = VCLIManager::cli_list();
     $list = [];
     foreach ($cli_list as $c) {
         $c = new GString($c);
         array_push($list, $c->delRightMost(chr(9))->__toString());
     }
     return in_array($id, $list);
 }