ref="../../../../../javax/faces/application/FacesMessage.html" title="class in javax.faces.application"><code>FacesMessage</code></a>s that have been queued that are not associated with
 any specific client identifier (if <code>clientId</code> is
 <code>null</code>).  If no such messages have been queued, return an
 empty <code>Iterator</code>.  The elements of the <code>Iterator</code>
 must be returned in the order in which they were added with calls to <a href="../../../../../javax/faces/context/FacesCon