void showTooltip() {
      if (myAccessible.getAccessibleTooltipText() != null) {
        Rectangle bounds = getBounds();
        Rectangle pBounds = getParent().getBounds();
        int x = pBounds.x + bounds.x + bounds.width / 2;
        int y = pBounds.y + bounds.y + bounds.height / 2;
        myGutter.showToolTip(myAccessible.getAccessibleTooltipText(), new Point(x, y), Balloon.Position.atRight);
      }
    }
void showTooltip()