@NotNull
  @Override
  @RequiresEdt
  public List<AnAction> createPopupActions() {
    List<AnAction> group = new ArrayList<>(myTextDiffProvider.getPopupActions());
    group.add(new MyToggleExpandByDefaultAction());

    group.add(Separator.getInstance());
    group.addAll(super.createPopupActions());

    return group;
  }
@NotNull
  @Override
  @RequiresEdt
  public List<AnAction> createPopupActions()