public function getRdfaPriceValidity()
    {
        $iDays = \OxidEsales\Eshop\Core\Registry::getConfig()->getConfigParam('iRDFaPriceValidity');
        $iFrom = \OxidEsales\Eshop\Core\Registry::getUtilsDate()->getTime();
        $iThrough = $iFrom + ($iDays * 24 * 60 * 60);
        $oPriceValidity = [];
        $oPriceValidity['validfrom'] = date('Y-m-d\TH:i:s', $iFrom) . "Z";
        $oPriceValidity['validthrough'] = date('Y-m-d\TH:i:s', $iThrough) . "Z";

        return $oPriceValidity;
    }