@Override
    public void actionPerformed(@NotNull AnActionEvent e) {
      PrevNextDifferenceIterable iterable = e.getData(DiffDataKeys.PREV_NEXT_DIFFERENCE_ITERABLE);
      if (iterable != null && iterable.canGoNext()) {
        iterable.goNext();
      }
    }
@Override
    public void actionPerformed(@NotNull AnActionEvent e)