d='tree2id3.2.2'>
                                Sub-item 3.2.2
                              </li>
                            </ul>
                          </li>
                        </ul>
                      </li>
                      <li class='expanded' id='tree2id4'>
                        Document with some children (expanded on init)
                        <ul>
                          <li id='tree2id4.1'>
                            Sub-item 4.1 (active and focus on init)
              