protected JComponent createLeftComponent() {
    myList = createList();

    final JScrollPane pane =
      ScrollPaneFactory.createScrollPane(myList,
                                         ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
                                         ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
    return ListWithFilter.wrap(myList, pane, o -> getItemText(o));
  }
protected JComponent createLeftComponent()