public function getFormId()
    {
        if ($this->_sFormId === null) {
            $this->_sFormId = \OxidEsales\Eshop\Core\Registry::getUtilsObject()->generateUId();
            \OxidEsales\Eshop\Core\Registry::getSession()->setVariable('sessionuformid', $this->_sFormId);
        }

        return $this->_sFormId;
    }