X 2.0 compliant parser.  Clients that specify their
 own unmarshal-time validation mechanism may wish to turn off the Jakarta XML Binding
 Provider's default validation mechanism via this API to avoid "double
 validation".
 <p>
 This method is deprecated as of Jakarta XML Binding - please use the new
 <a href="#setSchema(javax.xml.validation.Schema)"><code>setSchema(javax.xml.validation.Schema)</code></a> API.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>validating</code> - true