Implemented by the generated code to unmarshall an object
from unmarshaller events.
AbstractUnmarshallingEventHandlerImpl throws a SAXException when a problem is encountered
and that problem is not reported. It is the responsibility of the caller
of this interface to report it to the client's ValidationEventHandler
and re-wrap it into UnmarshalException.
author: Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)