@Override
  protected void configureUiHelper(TreeUIHelper helper) {
    final Function<TreePath, String> f = path -> {
      final SimpleNode node = getNodeFor(path);
      if (node instanceof PackagingElementNode) {
        return ((PackagingElementNode<?>)node).getElementPresentation().getSearchName();
      }
      return "";
    };
    TreeSpeedSearch.installOn(this, true, f);
  }
@Override
  protected void configureUiHelper(TreeUIHelper helper)