// this indicates that mechlistMIC is required by the server
                verifyMechListMIC(targ.getMechanismListMIC());
                return new NegTokenTarg(NegTokenTarg.UNSPECIFIED_RESULT, null, null, calculateMechListMIC());
            }
            if (targ.getResult() != NegTokenTarg.ACCEPT_COMPLETED) {
                throw new SmbException("SPNEGO negotiation did not complete");
            }