} else {
                    dc = getTransportContext().getNameServiceClient().getByName(this.domainController, true);
                    challenge = getTransportContext().getTransportPool().getChallenge(getTransportContext(), dc);
                }

                ntlm = NtlmSsp.authenticate(getTransportContext(), req, resp, challenge);
                if (ntlm == null) {

                final byte[] challenge = getTransportContext().getTransportPool().getChallenge(getTransportContext(), dc);
                ntlm = NtlmSsp.authenticate(getTransportContext(), request, response, challenge);
                if (ntlm == null) {
                    return;
                }
            } else {
                final String auth = new String(Base64.decode(msg.substring(6)), "US-ASCII");

                }

                req.getSession(); /* ensure session id is set for cluster env. */
                challenge = getTransportContext().getTransportPool().getChallenge(getTransportContext(), dc);
                if ((ntlm = NtlmSsp.authenticate(getTransportContext(), req, resp, challenge)) == null) {
                    return;
                }
            } else { /* Basic */

        handleField.set(handle, mockSmbPipeHandleInternal);

        // Setup real method calls for the methods we want to test - use lenient to avoid unnecessary stubbing
        lenient().when(handle.getTransportContext()).thenCallRealMethod();
        lenient().when(handle.getServer()).thenCallRealMethod();
        lenient().when(handle.getServerWithDfs()).thenCallRealMethod();

        if (log.isDebugEnabled()) {
            log.debug("Opening file " + u);
        }
        return new SmbFile(u, getTransportContext());
    }

    /**
     * @return
     */
    private CIFSContext getTransportContext() {
        if (this.transportContext == null) {
            this.transportContext = SingletonContext.getInstance();
        }
        return this.transportContext;

            return server;
        }

        @Override
        public String getServerWithDfs() {
            return serverWithDfs;
        }

        @Override
        public CIFSContext getTransportContext() {
            return localTransportContext;
        }

        @Override
        public byte[] getSessionKey() throws CIFSException {
            return sessionKey;
        }

        @Override

        }
        if (params.length() > 0) {
            url.append("?").append(params.substring(1));
        }

        return url.toString();
    }

    @Override
    public CIFSContext getTransportContext() {
        return this.pipe.getContext();
    }

    @Override
    public String getServer() {
        return this.pipe.getLocator().getServer();
    }

    @Override

            // Assert - should not throw exception
        }

        @Test
        void testGetTransportContext() {
            // Act & Assert
            assertEquals(mockCifsContext, smbFile.getTransportContext());
        }
    }

    @Nested
    class WhenHandlingPaths {

        @Test
        void testGetParent() {
            // Act & Assert

     */
    public abstract String getServerWithDfs();

    /**
     * Gets the CIFS context used for transport operations
     * @return the transport context used
     */
    public abstract CIFSContext getTransportContext();

    /**
     * Gets the session key from the underlying SMB session for encryption
     * @return session key of the underlying smb session
     * @throws CIFSException if unable to retrieve the session key

                    }
                    final SID[] sids = new SID[rpc.sids.num_sids];

                    final String origin_server = handle.getServer();
                    final CIFSContext origin_ctx = handle.getTransportContext();

                    for (int i = 0; i < sids.length; i++) {
                        sids[i] = new SID(rpc.sids.sids[i].sid, 0, null, null, false);
                        sids[i].origin_server = origin_server;