public static boolean isSameGroup(final GuiEditor editor, final List<? extends RadComponent> selectedComponents) {
    final RadRootContainer rootContainer = editor.getRootContainer();
    IButtonGroup group = FormEditingUtil.findGroupForComponent(rootContainer, selectedComponents.get(0));
    if (group == null) {
      return false;
    }
    for(int i=1; i<selectedComponents.size(); i++) {
      if (FormEditingUtil.findGroupForComponent(rootContainer, selectedComponents.get(i)) != group) {
        return false;
      }
    }
    return true;
  }
public static boolean isSameGroup(final GuiEditor editor, final List<? extends RadComponent> selectedComponents)