title: How to specify whether the message should show up in p:growl or p:messages?
body: <p>In my Facelets page I have this:</p>
  
  <pre><code>&lt;p:growl id="msg1" life="1500"/&gt;
  </code></pre>
  
  <p>and another</p>
  
  <pre><code>&lt;p:messages id="msg2"/&gt;
  </code></pre>
  
  <p>I need the following message to show up in <code>&lt;p:messages&gt;</code> only.</p>
  
  <pre><code>FacesContext.getCurrentInstance().addMessage(null, new FacesMessage("veillez saisir les champs obligatoires (*)", null));
  </code></pre>
  
  <p>But it also shows up in <code>&lt;p:growl&gt;</code>. </p>
  
  <p>How do I specify where the message should show up?</p>