protected function _applyCurrency(\OxidEsales\Eshop\Core\Price $oPrice, $oCur = null)
    {
        if (!$oCur) {
            $oCur = \OxidEsales\Eshop\Core\Registry::getConfig()->getActShopCurrencyObject();
        }

        $oPrice->multiply($oCur->rate);
    }