code: public static function buttonGroup($buttons = [], $options = [])
      {
          Ui::addCssClasses($options, ['ui', 'buttons']);
          $lines = [];
          foreach ($buttons as $button) {
              $label = ArrayHelper::remove($button, 'label', Yii::t('dosamigos/semantic/helpers', 'label'));
              $lines[] = static::button($label, $button);
          }
          return Ui::tag('div', implode("\n", $lines), $options);
      }
docs: Generates a [button group](http://semantic-ui.com/elements/button.html#buttons)
  
  @param array $buttons the array of button options in terms of name-value pairs to render. The following options
  are specially handled:
  - label: string, the label of the button. Defaults to 'label'
  @param array $options the tag options in terms of name-value pairs
  
  @return string the generated button group tag