private void updateMacScrollbarStyle() {
    NSScrollerHelper.Style style = NSScrollerHelper.getScrollerStyle();

    if (style != myMacScrollerStyle && scrollbar != null) {
      myMacScrollerStyle = style;

      updateStyleDefaults();
      restart();

      JScrollPane pane = ComponentUtil.getScrollPane(scrollbar);
      if (pane != null) pane.revalidate();
    }
  }
private void updateMacScrollbarStyle()