public function getAlsoBoughtTheseProducts()
    {
        if ($this->_aAlsoBoughtArts === null) {
            $this->_aAlsoBoughtArts = false;
            if ($oProduct = $this->getProduct()) {
                $this->_aAlsoBoughtArts = $oProduct->getCustomerAlsoBoughtThisProducts();
            }
        }

        return $this->_aAlsoBoughtArts;
    }