 Jakarta Server Faces 2.
 </p>

 <p class="changed_added_2_2">
 Implementations must call <a href="../component/UIComponent.html#visitTree(jakarta.faces.component.visit.VisitContext,jakarta.faces.component.visit.VisitCallback)"><code>UIComponent.visitTree(jakarta.faces.component.visit.VisitContext, jakarta.faces.component.visit.VisitCallback)</code></a> on the
 <a href="../component/UIViewRoot.html" title="class in jakarta.faces.component"><code>UIViewRoot</code></a> to perform the saving and restoring of t