@NotNull
  protected DiffGutterOperation createOperation(@NotNull DiffGutterOperation.RendererBuilder builder) {
    int offset = myEditor.getDocument().getLineStartOffset(myChange.getLine1());

    return new DiffGutterOperation.Simple(myEditor, offset, builder);
  }
@NotNull
  protected DiffGutterOperation createOperation(@NotNull DiffGutterOperation.RendererBuilder builder)