n <code>null</code>.
 </p>

 <p class="changed_added_2_0">
 Otherwise, the default implementation must obtain a reference to the <a href="../../../../jakarta/faces/view/ViewDeclarationLanguage.html" title="class in jakarta.faces.view"><code>ViewDeclarationLanguage</code></a> for this
 <code>viewId</code> and call its <a href="../../../../jakarta/faces/view/ViewDeclarationLanguage.html#restoreView(jakarta.faces.context.FacesContext,java.lang.String)"><code>ViewDeclarationLanguage.restoreView(jakarta.faces.co