protected function _isSearchClass()
    {
        if ($this->_blSearchClass === null) {
            $this->_blSearchClass = false;
            if ('search' == strtolower(\OxidEsales\Eshop\Core\Registry::getConfig()->getRequestControllerId())) {
                $this->_blSearchClass = true;
            }
        }

        return $this->_blSearchClass;
    }