@Override
  public void listFilled() {
    if (myModuleNodes.size() == 1) {
      final Iterator<DefaultMutableTreeNode> iterator = myItemNodes.values().iterator();
      if (iterator.hasNext()){
        final DefaultMutableTreeNode node = iterator.next();
        expandNode(node);
      }
    }
  }
@Override
  public void listFilled()