protected function _getArticles($blExcludeCanceled = false)
    {
        $sSelect = "SELECT `oxorderarticles`.* FROM `oxorderarticles`
                        WHERE `oxorderarticles`.`oxorderid` = '" . $this->getId() . "'" .
                   ($blExcludeCanceled ? " AND `oxorderarticles`.`oxstorno` != 1 " : " ") . "
                        ORDER BY `oxorderarticles`.`oxartid`, `oxorderarticles`.`oxselvariant`, `oxorderarticles`.`oxpersparam` ";

        // order articles
        $oArticles = oxNew(\OxidEsales\Eshop\Core\Model\ListModel::class);
        $oArticles->init('oxorderarticle');
        $oArticles->selectString($sSelect);

        return $oArticles;
    }