message String should be non-null. The value of id may be null, if the message is
 not specific to any XML element, or if no jsp:id attributes were passed on. If non-null, the value of id must be
 the value of a jsp:id attribute for the PageData passed into the validate() method.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>id</code> - Either null, or the value of a jsp:id attribute.</dd><dd><code>message</code> - A localized validation message.</dd></dl>
</li>
</ul>
</li>
</ul>
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