return new NegTokenTarg(NegTokenTarg.UNSPECIFIED_RESULT, null, null, calculateMechListMIC());
            }
            else if ( targ.getResult() != NegTokenTarg.ACCEPT_COMPLETED ) {
                throw new SmbException("SPNEGO negotiation did not complete");
            }
            verifyMechListMIC(targ.getMechanismListMIC());
            this.completed = true;
            return null;