public function noIndex()
    {
        $listType = \OxidEsales\Eshop\Core\Registry::getConfig()->getRequestParameter('listtype');
        if ($listType && ('vendor' == $listType || 'manufacturer' == $listType)) {
            return $this->_iViewIndexState = VIEW_INDEXSTATE_NOINDEXFOLLOW;
        }

        return parent::noIndex();
    }