@NotNull
  @Override
  protected List<AnAction> createToolbarActions() {
    List<AnAction> group = new ArrayList<>(myTextDiffProvider.getToolbarActions());
    group.add(new MyToggleExpandByDefaultAction());
    group.add(new MyToggleAutoScrollAction());
    group.add(new MyReadOnlyLockAction());
    group.add(myEditorSettingsAction);

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

    return group;
  }
@NotNull
  @Override
  protected List<AnAction> createToolbarActions()