@NotNull
  @Override
  protected DefaultActionGroup createPopupActionGroup(@NotNull JComponent button, @NotNull DataContext context) {
    return new DefaultActionGroup(
      ContainerUtil.map(collectStrategies(),
                        (NotNullFunction<ChangeListGroupingStrategy, DumbAwareAction>)strategy -> new SetGroupingAction(strategy)));
  }
@NotNull
  @Override
  protected DefaultActionGroup createPopupActionGroup(@NotNull JComponent button, @NotNull DataContext context)