l children present in the old list but not the new. Save the
 new list as a component attribute so that it gets saved as part of the component's state.</li>

 <li>Retrieve from the <a href="../../../../../jakarta/faces/component/UIComponent.html" title="class in jakarta.faces.component"><code>UIComponent</code></a> the set of facet names of facets created by <a href="../../../../../jakarta/faces/webapp/UIComponentTag.html" title="class in jakarta.faces.webapp"><code>UIComponentTag</code></a>
 instances the 