{# Keep every section when a reference page has several top-level headings. #}
{% macro section_links(sections, depth) -%}
  {% for section in sections -%}
    <li class="toctree-l{{ depth }}">
      <a class="reference internal" href="{% if nav_item != page %}{{ nav_item.url|url }}{% endif %}{{ section.url }}">{{ section.title }}</a>
      {% if section.children and depth < config.theme.navigation_depth -%}
        <ul>{{ section_links(section.children, depth + 1) }}</ul>
      {%- endif %}
    </li>
  {%- endfor %}
{%- endmacro %}
{% if nav_item.toc.items|length > 1 -%}
  {{ section_links(nav_item.toc.items, navlevel) }}
{%- else -%}
  {{ section_links(toc_item.children, navlevel) }}
{%- endif %}