@Override
        public void itemStateChanged(ItemEvent e) {
          if (e.getStateChange() == ItemEvent.SELECTED && e.getItem() == RadButtonGroup.NEW_GROUP) {
            String newGroupName = myRootContainer.suggestGroupName();
            newGroupName = (String)JOptionPane.showInputDialog(myCbx,
                                                               UIDesignerBundle.message("button.group.name.prompt"),
                                                               UIDesignerBundle.message("button.group.name.title"),
                                                               JOptionPane.QUESTION_MESSAGE, null, null, newGroupName);
            if (newGroupName != null) {
              RadButtonGroup group = myRootContainer.createGroup(newGroupName);
              myRootContainer.setGroupForComponent(myComponent, group);
              updateModel();
            }
          }
        }
@Override
        public void itemStateChanged(ItemEvent e)