tion event handler will be called by the Jakarta XML Binding Provider if any
 validation errors are encountered during calls to 
 <a href="../../../jakarta/xml/bind/Validator.html#validate-java.lang.Object-"><code>validate</code></a>.  If the client application does not 
 register a validation event handler before invoking the validate method, 
 then validation events will be handled by the default event handler which
 will terminate the validate operation after the first error or fatal error
 is encountere