@Override
    public Insets getBorderInsets(Component component, Insets insets) {
      insets.top = myMode == FeedbackTreeLayer.INSERT_BEFORE ? thickness : 0;
      insets.left = insets.right = thickness;
      insets.bottom = myMode == FeedbackTreeLayer.INSERT_AFTER ? thickness : 0;
      return insets;
    }
@Override
    public Insets getBorderInsets(Component component, Insets insets)