protected function renderControlWrapper($id, $element, $elementString, $description, $wrapper = null)
    {
        if (!$wrapper) {
            if ($element instanceof ButtonElement || $element instanceof SubmitElement) {
                return $elementString . $description;
            }
            $wrapper = $this->controlWrapper;
        }
        return sprintf($wrapper, $id, $elementString, $description);
    }