@Override
  protected void paintMarker(Graphics2D g, int x, int y, int width, int height, Crumb crumb, int thickness) {
    super.paintMarker(g, x, y, width, above ? height : thickness, crumb, thickness);
  }
@Override
  protected void paintMarker(Graphics2D g, int x, int y, int width, int height, Crumb crumb, int thickness)