public boolean updateProjectTree(final Module[] modules) {
    if (myRoot.getChildCount() == 0) return false; //isn't visible
    List<Pair<MyNode, Module>> nodes = new ArrayList<>(modules.length);
    Set<MyNode> nodeSet = new HashSet<>();
    for (Module module : modules) {
      MyNode node = findModuleNode(module);
      LOG.assertTrue(node != null, "Module " + module.getName() + " is not in project.");
      nodes.add(Pair.create(node, module));
      nodeSet.add(node);
    }
    ModuleGroupingTreeHelper<Module, MyNode> helper = createGroupingHelper(nodeSet::contains);
    helper.moveModuleNodesToProperGroup(nodes, myRoot, getTreeModel(), myTree);
    return true;
  }
public boolean updateProjectTree(final Module[] modules)