public function clean()
 {
     global $gantry;
     if (array_key_exists('cookie_time', $gantry->_working_params)) {
         $cookie_time = time() + (int) $gantry->_working_params['cookie_time']['value'];
     }
     foreach ($this->_setincookie as $cookie_var) {
         if (array_key_exists($gantry->template_prefix . $gantry->_base_params_checksum . "-" . $cookie_var, $_COOKIE)) {
             setcookie($gantry->template_prefix . $gantry->_base_params_checksum . "-" . $cookie_var, "", $cookie_time, $gantry->getCookiePath(), false);
         }
     }
     GantryCookieParamOverride::_flushOldCookies();
 }