protected function _generateListGroupText($title)
    {
        if (is_array($title)) {
            $text = '';
            if (!empty($title['header'])) {
                $text .= $this->tag('h4', $title['header'], ['class' => 'list-group-item-heading']);
            }
            if (!empty($title['text'])) {
                $text .= $this->para('list-group-item-text', $title['text']);
            }
        } else {
            $text = $title;
        }
        return $text;
    }