&nbsp;<code><a href="../../../../../javax/faces/context/FacesContext.html#addMessage-java.lang.String-javax.faces.application.FacesMessage-">FacesContext</a></code></span></div>
<div class="block"><p>Append a <a href="../../../../../javax/faces/application/FacesMessage.html" title="class in javax.faces.application"><code>FacesMessage</code></a> to the set of messages associated with
 the specified client identifier, if <code>clientId</code> is
 not <code>null</code>.  If <code>clientId</code> is <code>null<