* @param subject
     *            the subject to set
     */
    protected void setSubject ( Subject subject ) {
        this.subject = subject;
    }


    @Override
    public void refresh () throws CIFSException {
        // custom Kerb5Authenticators need to override this method for support
        throw new SmbUnsupportedOperationException("Refreshing credentials is not supported by this authenticator");
    }

    /**
     * @return subject associated with the credentials
     */
    Subject getSubject ();


    /**
     * @throws CIFSException
     * 
     */
    void refresh () throws CIFSException;

        }


        @Override
        public void refresh () throws CIFSException {
            try {
                System.out.println("Refreshing");
                setSubject(getInitiatorSubject(getTestUser(), getTestUserPassword(), getTestUserDomainRequired(), null));
                System.out.println("Refreshed");
            }
            catch ( Exception e ) {

     */
    public static final int NTLMSSP_TARGET_TYPE_SHARE = 0x00040000;

    /**
     * Indicates that the NTLM2 signing and sealing scheme should be used
     * for protecting authenticated communications. This refers to a
     * particular session security scheme, and is not related to the use
     * of NTLMv2 authentication.
     */
    public static final int NTLMSSP_NEGOTIATE_EXTENDED_SESSIONSECURITY = 0x00080000;

    /**

        try ( SmbFile r = getDefaultShareRoot();
              SmbFile f = new SmbFile(r, "x-test/") ) {
            if ( !f.exists() ) {
                f.mkdirs();
            }
        }

        // fresh connection
        CIFSContext ctx = getNewContext();
        try ( SmbFile r = new SmbFile(getTestShareURL(), withTestNTLMCredentials(ctx));
              SmbFile f = new SmbFile(r, "x-test/") ) {

        to.cachedSubject = from.cachedSubject;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.Kerb5Authenticator#refresh()
     */
    @Override
    public void refresh () throws CIFSException {
        log.debug("Refreshing JAAS credentials");
        this.cachedSubject = null;
    }


    /**
     * {@inheritDoc}
     *

            return (T) this;
        }
        return null;
    }


    @Override
    public Subject getSubject () {
        return null;
    }


    @Override
    public void refresh () throws CIFSException {}


    /**
     * 
     * {@inheritDoc}
     *
     * @see jcifs.smb.CredentialsInternal#createContext(jcifs.CIFSContext, java.lang.String, java.lang.String, byte[],

     * <code>SmbFile</code> references a workgroup, the name of the workgroup
     * is returned. If this <code>SmbFile</code> refers to the root of this
     * SMB network hierarchy, <code>null</code> is returned.
     * 
     * @return The server or workgroup name or <code>null</code> if this
     *         <code>SmbFile</code> refers to the root <code>smb://</code> resource.
     */
    String getServer ();


    /**

        try ( SmbSessionImpl treesess = t.getSession() ) {
            if ( treesess.getCredentials().isAnonymous() || treesess.getCredentials().isGuest() ) {
                // refresh anonymous session or fallback to anonymous from guest login
                try ( SmbSessionInternal s = trans

        final boolean doSigning = securityMode != 0 && !anonymous;
        long newSessId = 0;
        long curSessId = this.sessionId;

        synchronized ( trans ) {
            this.credentials.refresh();
            Subject s = this.credentials.getSubject();
            SSPContext ctx = createContext(trans, tdomain, negoResp, doSigning, s);
            while ( true ) {
                token = createToken(ctx, token, s);