protected function _parseExtend() {
        foreach (Template::$_extends as $extend) {
            $this->_content = $extend['class']::$extend['method']($this->_content);
        }

        foreach (Config::instance()->config['user']['template'] as $extend) {
            $this->_content = $extend['class']::$extend['method']($this->_content);
        }
    }