e specialized behavior
 to an existing <a href="../../../javax/faces/view/ViewDeclarationLanguage.html" title="class in javax.faces.view"><code>ViewDeclarationLanguage</code></a> instance.  The default
 implementation of all methods is to call through to the wrapped
 <a href="../../../javax/faces/view/ViewDeclarationLanguage.html" title="class in javax.faces.view"><code>ViewDeclarationLanguage</code></a> instance.</p>

 <p class="changed_added_2_3">Usage: extend this class and push the implementation being 