Added comments to test

Author: DoNguyenHung

doc/_templates/sidebar-nav-bs.html

@@ -5,5 +5,47 @@
     {% else %}
     {{ generate_toctree_html("sidebar", maxdepth=4, collapse=False, includehidden=True, titles_only=True) }}
     {% endif %}
+
+    <!-- {% if pagename.startswith("reference") %}
+      {% set toc = generate_toctree_html(
+        "sidebar",
+        maxdepth=4,
+        collapse=True,
+        includehidden=True,
+        titles_only=True
+      ) %}
+      {% set toc_items = toc.split('<li>') %}
+      {% set sorted_items = ['<li>' + item for item in toc_items[1:]|sort(case_sensitive=False)] %}
+      {{ sorted_items|join('')|safe }}
+    {% else %}
+      {{ generate_toctree_html("sidebar", maxdepth=4, collapse=False, includehidden=True, titles_only=True) }}
+    {% endif %} -->
+
+    <!-- {% if pagename.startswith("reference") %}
+      {% set toc = generate_toctree_html(
+        "sidebar",
+        maxdepth=4,
+        collapse=True,
+        includehidden=True,
+        titles_only=True
+      ) %}
+      {% set toc_items = toc.split('<li>') %}
+      {% set sorted_items = ['<li>' + item for item in toc_items[1:]|sort(case_sensitive=False)] %}
+      <div class="bd-toc-item navbar-nav">
+        {{ sorted_items|join('')|safe }}
+      </div>
+    {% else %}
+      {{ generate_toctree_html("sidebar", maxdepth=4, collapse=False, includehidden=True, titles_only=True) }}
+    {% endif %} -->
+
+    <!-- {% if pagename.startswith("reference") %}
+      {% set toc = generate_toctree_html("sidebar", maxdepth=4, collapse=True, includehidden=True, titles_only=True) %}
+      {% set items = toc.split('</li>') %}
+      {% for item in items|sort(case_sensitive=False) %}
+        {{ item }}</li>
+      {% endfor %}
+    {% else %}
+      {{ generate_toctree_html("sidebar", maxdepth=4, collapse=False, includehidden=True, titles_only=True) }}
+    {% endif %} -->
   </div>
 </nav>