ueue an error message and set
 the <code>valid</code> property to <code>false</code>.</p>

 <p class="changed_added_2_0">If <a href="../../../javax/faces/component/UIInput.html#isRequired--"><code>UIInput.isRequired()</code></a> returns
 <code>true</code>, and the current value is equal to the value of
 an inner <a href="../../../javax/faces/component/UISelectItem.html" title="class in javax.faces.component"><code>UISelectItem</code></a> whose <a href="../../../javax/faces/component/UISelectItem.html#isNoSe