public function getLayoutColumns($layoutId)
    {
        if (!isset($this->layoutSetup[$layoutId])) {
            return [];
        }

        if (empty($GLOBALS['tx_gridelements']['ceBackendLayoutData'][$layoutId])) {
            if (!empty($this->layoutSetup[$layoutId]['config']['rows.'])) {
                $GLOBALS['tx_gridelements']['ceBackendLayoutData'][$layoutId] = $this->checkAvailableColumns($this->layoutSetup[$layoutId]);
            }
        }

        return $GLOBALS['tx_gridelements']['ceBackendLayoutData'][$layoutId];
    }