public function onExtractThemeFiles(\DOMDocument $xml, ZipReader $archive, $themeId): void
    {
        $tables = $xml->getElementsByTagName('table');

        for ($index = 0; $index < $tables->length; $index++) {
            if ($tables->item($index)->getAttribute('name') !== 'tl_bs_grid') {
                continue;
            }

            $this->importGrid($tables->item($index), (int) $themeId);
        }
    }