public function getListType()
    {
        if ($this->_sListType === null) {
            $this->_sListType = false;
            if ($this->getArticleId()) {
                // searching in vendor #671
                $this->_sListType = \OxidEsales\Eshop\Core\Registry::getConfig()->getRequestParameter('listtype');
            }
        }

        return $this->_sListType;
    }