public function removeArticle($articleId)
    {
        // remove actions from articles also
        $oDb = \OxidEsales\Eshop\Core\DatabaseProvider::getDb();
        $sDelete = "delete from oxactions2article where oxactionid = " . $oDb->quote($this->getId()) . " and oxartid = " . $oDb->quote($articleId) . " and oxshopid = '" . $this->getShopId() . "'";
        $iRemovedArticles = $oDb->execute($sDelete);

        return (bool) $iRemovedArticles;
    }