public function getThumbUrl()
    {
        if (($sIcon = $this->oxcategories__oxthumb->value)) {
            $sSize = \OxidEsales\Eshop\Core\Registry::getConfig()->getConfigParam('sCatThumbnailsize');

            return \OxidEsales\Eshop\Core\Registry::getPictureHandler()->getPicUrl("category/thumb/", $sIcon, $sSize);
        }
    }