private void createActions() {
    myRemoveAction = __ -> {
      ListUtil.removeSelectedItems(myList);
      updateButtons();
    };
    myUpAction = __ -> {
      ListUtil.moveSelectedItemsUp(myList);
      updateButtons();
    };
    myDownAction = __ -> {
      ListUtil.moveSelectedItemsDown(myList);
      updateButtons();
    };
  }
private void createActions()