show icon with p:commandLink
<p>How to show an icon with commandLink:</p>

<pre><code>&lt;p:commandLink 
         styleClass="ui-icon ui-icon-plus"
         action="#{bean.doSomething}"     &gt;

         &lt;h:outputText value="Add" /&gt;   
&lt;/p:commandLink&gt;
</code></pre>

<p>The outputText (Add) is not visible. What is the right way for commandLink to support icon? Thanks.</p>