public static function getGrids(GetGridsEvent $event)
    {
        $model = $event->getModel();
        $grids = $event->getGrids();

        if ($model->type == 'semantic_html5') {
            $query  = 'SELECT * FROM tl_columnset WHERE published=1 ORDER BY title';
            $result = \Database::getInstance()->query($query);

            while ($result->next()) {
                $key = sprintf($GLOBALS['TL_LANG']['tl_content']['bootstrap_columns'], $result->columns);

                $grids[$key][$result->id] = $result->title;
            }
        }
    }