ed when using this widget.</p>


<div class="detailHeader" id="data-detail">
data<span class="detailHeaderTag">
property
</span>
</div>

<div class="signature">
public array <b>$data</b>;</div>

<p>the data that can be used to generate the tree view content.
Each array element corresponds to a tree view node with the following structure:
<ul>
<li>text: string, required, the HTML text associated with this node.</li>
<li>expanded: boolean, optional, whether the tree view node is in expanded.</li>
<li>id: stri