KerberosTime requestedEndTime = new KerberosTime( currentTime + KerberosTime.DAY );
modifier.setTill( requestedEndTime );
RequestBody requestBody = modifier.getRequestBody();
KdcRequest message = getKdcRequest( tgt, requestBody );
handler.messageReceived( session, message );
ErrorMessage error = ( ErrorMessage ) session.getMessage();
assertEquals( "KDC cannot accommodate requested option", 13, error.getErrorCode() );