setContextFlags(value ? ( getContextFlags() | flag ) : ( getContextFlags() & ( 0xffffffff ^ flag ) ));
    }


    public ASN1ObjectIdentifier[] getMechanisms () {
        return this.mechanisms;
    }


    public void setMechanisms ( ASN1ObjectIdentifier[] mechanisms ) {
        this.mechanisms = mechanisms;
    }


    /**
     * {@inheritDoc}
     *

    public NegTokenTarg () {}


    public NegTokenTarg ( int result, ASN1ObjectIdentifier mechanism, byte[] mechanismToken, byte[] mechanismListMIC ) {
        setResult(result);
        setMechanism(mechanism);
        setMechanismToken(mechanismToken);
        setMechanismListMIC(mechanismListMIC);
    }


    public NegTokenTarg ( byte[] token ) throws IOException {
        parse(token);
    }

            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) ) {

        byte[] inputToken = null;
        if ( spToken instanceof NegTokenInit ) {
            NegTokenInit tinit = (NegTokenInit) spToken;
            ASN1ObjectIdentifier[] rm = tinit.getMechanisms();
            this.remoteMechs = rm;
            ASN1ObjectIdentifier prefMech = rm[ 0 ];
            // only use token if the optimistic mechanism is supported
            if ( this.mechContext.isSupported(prefMech) ) {