@NotNull
  protected DiffGutterOperation createOperation(@NotNull Side side,
                                                @NotNull DiffGutterOperation.ModifiersRendererBuilder builder) {
    int offset = side.getStartOffset(myChange.getFragment());
    EditorEx editor = myViewer.getEditor(side);

    return new DiffGutterOperation.WithModifiers(editor, offset, myViewer.getModifierProvider(), builder);
  }
@NotNull
  protected DiffGutterOperation createOperation(@NotNull Side side,
                                                @NotNull DiffGutterOperation.ModifiersRendererBuilder builder)