lex-panel>
      </px-tree-view-node>
    </px-tree-view-node>
  </px-tree-view-node>

  <!-- Lights -->
  <px-tree-view-node>
    <px-flex-panel orientation="horizontal" class="tree-view-header">
      <div class="icon light-icon"></div>
      <div>Lights</div>
    </px-flex-panel>

    <!-- Sun -->
    <px-tree-view-node>
      <px-flex-panel orientation="horizontal" class="tree-view-header">
        <div class="icon light-icon"></div>
        <div>Sun</div>
      </px-flex-panel>
    </px-tree-view-node>