ader="Components (double click to expand)">
    <px-tree-view-node header="Layout">
      <px-tree-view-node header="FlexPanel"></px-tree-view-node>
      <px-tree-view-node header="GridPanel"></px-tree-view-node>
    </px-tree-view-node>
    <px-tree-view-node header="Navigation">
      <px-tree-view-node header="TreeView"></px-tree-view-node>
      <px-tree-view-node header="ListView"></px-tree-view-node>
    </px-tree-view-node>
  </px-tree-view-node>
</px-tree-view>
      <pre class="code"><code>&lt;px-