on must call <a href="../../../jakarta/faces/lifecycle/ClientWindowFactory.html#getClientWindow-jakarta.faces.context.FacesContext-"><code>ClientWindowFactory.getClientWindow(jakarta.faces.context.FacesContext)</code></a> and make it
 so the return from that method is what gets returned from a call to <a href="../../../jakarta/faces/context/ExternalContext.html#getClientWindow--"><code>ExternalContext.getClientWindow()</code></a> on the
 returned <code>ExternalContext</code> instance.
 </p></div>
<dl>
<dt><