public static function labelGroup($labels = [], $options = [])
    {
        Ui::addCssClasses($options, ['ui', 'labels']);
        $lines = [];
        foreach ($labels as $label) {
            $content = ArrayHelper::remove($label, 'content');
            $lines[] = static::label($content, $label);
        }
        return Ui::tag('div', implode("\n", $lines), $options);
    }