public static function GetURLPageStateParameters()
    {
        // ------------------------------------------------------------------------
        $oURLData = &TCMSSmartURLData::GetActive();
        $aSeoParam = $oURLData->getSeoURLParameters();
        $aSeoParam[] = MTShopBasketCoreEndpoint::URL_REQUEST_PARAMETER;
        $aSeoParam[] = 'module_fnc';
        $aSeoParam[] = 'pagedef';

        return array_keys(TGlobal::instance()->GetRawUserData(null, $aSeoParam));
    }