public function getSearchManufacturer()
    {
        if ($this->_sSearchManufacturer === null) {
            $this->_sSearchManufacturer = false;
            if ($this->_isSearchClass()) {
                // searching in Manufacturer #671
                $sManufacturerParameter = \OxidEsales\Eshop\Core\Registry::getConfig()->getRequestParameter('searchmanufacturer');
                $this->_sSearchManufacturer = rawurldecode($sManufacturerParameter);
            }
        }

        return $this->_sSearchManufacturer;
    }