public function reload($arg = array(), $fn = null, $url = null, $interval = null)
    {
        if ($fn && $fn instanceof self) {
            $fn->_enclose();
        }
        $obj = $this->owner;
        if ($url === null) {
            $url = $this->app->url(null, array('cut_object' => $obj->name));
        }

        return $this->univ()->_fn('reload', array($url, $arg, $fn, $interval));
    }