codec.handleMessage(message);
        RMProperties rmps = RMContextUtils.retrieveRMProperties(message, false);
        Collection<AckRequestedType> requested = rmps.getAcksRequested();
        assertNotNull(requested);
        assertEquals(1, requested.size());
        AckRequestedType ar = requested.iterator().next();
        assertNotNull(ar);
        assertEquals(ar.getIdentifier().getValue(), SEQ_IDENTIFIER);
        SequenceType s = rmps.getSequence();
        assertNotNull(s);
        assertEquals(s.getIdentifier().getValue(), SEQ_IDENTIFIER);
        assertEquals(s.getMessageNumber(), MSG2_MESSAGE_NUMBER);