{% for item in tree %}{% if item.heading %}{% else %}{% if item.sectiontitle %}<li class="leaf menu-closed"><a href="#" class="expand-menu "><span class="menu-icon" aria-hidden="true"></span>{{ item.sectiontitle }}</a>
<ul class="nav-sub">
  {% assign tree = item.section %}{% include tree.html %}
</ul>
{% else %}
    <li class="leaf"><a href="{{ item.path }}" class="{% if item.path == page.url %}active currentPage{% endif %}">{{ item.title }}</a></li>{% endif %}{% endif %}{% endfor %}