public function render()
    {
        parent::render();

        $this->_aViewData['edit'] = $oCategory = oxNew(\OxidEsales\Eshop\Application\Model\Category::class);

        $soxId = $this->getEditObjectId();
        if (isset($soxId) && $soxId != '-1') {
            // load object
            $oCategory->load($soxId);
        }

        return "category_pictures.tpl";
    }