Collection::__get PHP 메소드

    public function __get($key)
    {
        return $this->get($key);
    }

 public function __get($_name)
 {
     switch ($_name) {
         case "nextId":
             return $this->l_nextId;
         case "insert":
             return $this->l_insert;
         default:
             return parent::__get($_name);
     }
 }