code: @Override
    public void refreshGuiAndShowFile(File file) {
      if(rootNode.getChildCount() > 0) {
        rootNode.removeAllChildren();
        treeModel.reload();
      }
      if(guiMain.getAsmProjectUml().getProjectUml() != null) {
        addTreeNodes(file);
        guiMain.getMenuMain().setVisibleProjectMenu(true);
      }
      else {
        guiMain.getMenuMain().setVisibleProjectMenu(false);
      }
    }
docs: refresh tree and expand to file that usually newly created