.unwrap(SmbTransportInternal.class);
                    final SmbTransportInternal trans = this.exclusiveTransport;
                    try (SmbSessionInternal smbSession = trans.getSmbSession(this.ctx, host, targetDomain).unwrap(SmbSessionInternal.class);
                            SmbTreeImpl uct = smbSession.getSmbTree(share, null).unwrap(SmbTreeImpl.class);

     */
    @Override
    public SmbSessionImpl getSmbSession(final CIFSContext tf) {
        return getSmbSession(tf, null, null);
    }

    /**
     *
     * @param tf
     *            context to use
     * @return a session for the context
     */
    @Override
    @SuppressWarnings("resource")
    public synchronized SmbSessionImpl getSmbSession(final CIFSContext tf, String targetHost, String targetDomain) {

                         not specified. SMB signing may not work propertly.\
                          Skipping DC interrogation.""");
            } else {
                try (SmbSessionInternal ssn = trans.getSmbSession(tf.withDefaultCredentials()).unwrap(SmbSessionInternal.class)) {
                    ssn.treeConnectLogon();
                }
            }
            return new NtlmChallenge(trans.getServerEncryptionKey(), dc);

        SmbTreeInternal tree = mock(SmbTreeInternal.class);

        when(mockTransport.unwrap(SmbTransportInternal.class)).thenReturn(internal);
        when(internal.getSmbSession(eq(ctx), eq("server.test"), isNull())).thenReturn(session);
        when(session.unwrap(SmbSessionInternal.class)).thenReturn(session);
        when(session.getSmbTree(eq("IPC$"), isNull())).thenReturn(tree);

                .getSmbTransport(tf, dc, port, false, tf.getConfig().isIpcSigningEnforced())
                .unwrap(SmbTransportInternal.class);
                SmbSessionInternal smbSession = smbTransport.getSmbSession(tf, dc.getHostName(), null).unwrap(SmbSessionInternal.class);
                SmbTreeInternal tree = smbSession.getSmbTree(tf.getConfig().getLogonShare(), null).unwrap(SmbTreeInternal.class)) {
            tree.connectLogon(tf);

                ssn = trans.getSmbSession(NtlmPasswordAuthentication.NULL);
                tree = ssn.getSmbTree(null, null);
            } else if ((a = NtlmAuthenticator.requestNtlmPasswordAuthentication(url.toString(), sae)) != null) {
                auth = a;
                ssn = trans.getSmbSession(auth);
                tree = ssn.getSmbTree(share, null);

                        /*
                         * preauthentication
                         */
                        try (SmbSessionImpl smbSession = trans.getSmbSession(getContext().withDefaultCredentials());
                                SmbTreeImpl t = smbSession.getSmbTree(getContext().getConfig().getLogonShare(), null)) {
                            t.treeConnect(null, null);