if (this.firstResponse) {
                if (!this.mechContext.isSupported(targ.getMechanism())) {
                    throw new SmbException("Server chose an unsupported mechanism " + targ.getMechanism());
                }
                this.selectedMech = targ.getMechanism();
                if (targ.getResult() == NegTokenTarg.REQUEST_MIC) {
                    this.requireMic = true;

        // Assert – all getters match the original values
        assertEquals(NegTokenTarg.ACCEPT_COMPLETED, roundTrip.getResult(), "result should roundtrip");
        assertEquals(mech, roundTrip.getMechanism(), "mechanism should roundtrip");
        assertArrayEquals(tokenArray, roundTrip.getMechanismToken(), "mechanism token should roundtrip");
        assertArrayEquals(mic, roundTrip.getMechanismListMIC(), "mic should roundtrip");

     * @return the mechanism OID
     */
    public ASN1ObjectIdentifier getMechanism() {
        return this.mechanism;
    }

    /**
     * Sets the selected authentication mechanism OID
     * @param mechanism the mechanism OID to set
     */
    public void setMechanism(final ASN1ObjectIdentifier mechanism) {
        this.mechanism = mechanism;
    }

    @Override

            NegTokenInit parsed = new NegTokenInit(encoded);

            if (mechanisms == null) {
                assertNull(parsed.getMechanisms());
            } else {
                assertArrayEquals(mechanisms, parsed.getMechanisms());
            }
        }

        static Stream<Arguments> provideMechanismCombinations() {

        return String.format("NegTokenInit[flags=%d,mechs=%s,mic=%s]", this.getContextFlags(), Arrays.toString(this.getMechanisms()), mic);
    }

    @Override
    public byte[] toByteArray() {
        try {
            final ASN1EncodableVector fields = new ASN1EncodableVector();
            final ASN1ObjectIdentifier[] mechs = getMechanisms();
            if (mechs != null) {

            if (log.isDebugEnabled()) {
                log.debug("Have initial token " + tok);
            }
            if (tok.getMechanisms() != null) {
                Set<ASN1ObjectIdentifier> mechs = new HashSet<>(Arrays.asList(tok.getMechanisms()));
                boolean foundKerberos = false;
                for (ASN1ObjectIdentifier mech : Kerb5Context.SUPPORTED_MECHS) {

                if (log.isDebugEnabled()) {
                    log.debug("Have initial token " + tok);
                }
                if (tok.getMechanisms() != null) {
                    Set<ASN1ObjectIdentifier> mechs = new HashSet<>(Arrays.asList(tok.getMechanisms()));
                    if (!mechs.contains(NtlmContext.NTLMSSP_OID)) {