@Override
  public void setLineSeparatorRenderer(LineSeparatorRenderer renderer) {
    LineSeparatorRenderer old = myLineSeparatorRenderer;
    myLineSeparatorRenderer = renderer;
    if (!Objects.equals(old, renderer)) {
      fireChanged(true, false, false);
    }
  }
@Override
  public void setLineSeparatorRenderer(LineSeparatorRenderer renderer)