// Is this message comming out of order??
if( intValue!=s.lastMessageAcked+1) {
// This implementation is really simple and just drops out of order
// messages.
SequenceAcknowledgementDocument resultDoc = SequenceAcknowledgementDocument.Factory.newInstance();
SequenceAcknowledgement acknowledgement = resultDoc.addNewSequenceAcknowledgement();
acknowledgement.setIdentifier(sequence.getIdentifier());
if( s.lastMessageAcked> 0 ) {
AcknowledgementRange range = acknowledgement.addNewAcknowledgementRange();
range.setLower(BigInteger.ONE);
range.setUpper(new BigInteger(""+s.lastMessageAcked));