final public function addVersionTags($sOutput)
    {
        // DISPLAY IT
        $sVersion = \OxidEsales\Eshop\Core\Registry::getConfig()->getVersion();
        $sEdition = \OxidEsales\Eshop\Core\Registry::getConfig()->getFullEdition();
        $sCurYear = date("Y");

        // SHOW ONLY MAJOR VERSION NUMBER
        $aVersion = explode('.', $sVersion);
        $sMajorVersion = reset($aVersion);

        $sShopMode = $this->getShopMode();

        // Replacing only once per page
        $sSearch = "</head>";
        $sReplace = "</head>\n  <!-- OXID eShop {$sEdition}, Version {$sMajorVersion}{$sShopMode}, Shopping Cart System (c) OXID eSales AG 2003 - {$sCurYear} - https://www.oxid-esales.com -->";

        $sOutput = ltrim($sOutput);
        if (($pos = stripos($sOutput, $sSearch)) !== false) {
            $sOutput = substr_replace($sOutput, $sReplace, $pos, strlen($sSearch));
        }

        return $sOutput;
    }