private function importGrid(\DOMElement $item, int $themeId): void
    {
        $rows = $item->childNodes;

        for ($index = 0; $index < $rows->length; $index++) {
            $values = $this->getRowValues($rows->item($index), $themeId);
            $model  = new GridModel();

            $model->setRow($values);
            $model->save();
        }
    }