protected function _getObjectParameters($sClass, $aObjectParams, $sOxId = null, $sShopId = null)
    {
        $oServiceCaller = new ServiceCaller();
        $oServiceCaller->setParameter('cl', $sClass);

        $sOxId = $sOxId ? $sOxId : 'lastInsertedId';
        $oServiceCaller->setParameter('oxid', $sOxId);
        $oServiceCaller->setParameter('classparams', $aObjectParams);

        return $oServiceCaller->callService('ShopObjectConstructor', $sShopId);
    }