```java
@Test
public void testMultiChannelThroughput() throws Exception {
    // Requires multi-NIC test environment
    CIFSContext context = getTestContext();
    context.getConfig().setProperty("jcifs.smb.client.useMultiChannel", "true");
    context.getConfig().setProperty("jcifs.smb.client.maxChannels", "4");
    
    SmbFile file = new SmbFile("smb://server/share/largefile.dat", context);
    

        super(config, SMB2_ECHO);
    }

    @Override
    protected Smb2EchoResponse createResponse(final CIFSContext tc, final ServerMessageBlock2Request<Smb2EchoResponse> req) {
        return new Smb2EchoResponse(tc.getConfig());
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size() {

    }

    @Override
    protected Smb2LogoffResponse createResponse(final CIFSContext tc, final ServerMessageBlock2Request<Smb2LogoffResponse> req) {
        return new Smb2LogoffResponse(tc.getConfig());
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size() {

    assertTrue(file.exists());
}

@Test
public void testWitnessServiceDiscovery() throws Exception {
    CIFSContext context = getTestContext();
    context.getConfig().setProperty("jcifs.smb.client.useWitness", "true");
    context.getConfig().setProperty("jcifs.smb.client.witnessServiceDiscovery", "true");
    
    SmbSession session = new SmbSession(context, transport);
    session.initializeWitnessSupport();
    

            message.setIpAddress(request.getServerAddress());
            message.setClientComputerName(context.getConfig().getNetbiosHostname());
            message.setFlags(request.getFlags());
            message.setTimeout((int) (context.getConfig().getWitnessRegistrationTimeout() / 1000));

            // Send the RPC request
            rpcHandle.sendrecv(message);

        lenient().when(request.getMethod()).thenReturn("GET");

        // Setup CIFSContext configuration mock
        lenient().when(cifsContext.getConfig()).thenReturn(configuration);
        lenient().when(configuration.getDefaultDomain()).thenReturn("TEST_DOMAIN");
    }

    /**
     * Test the init method of the servlet.

        void testConstructorWithConfig() {
            TestServerMessageBlock2Response resp = new TestServerMessageBlock2Response(mockConfig);
            assertNotNull(resp);
            assertSame(mockConfig, resp.getConfig());
        }

        @Test
        @DisplayName("Should construct with config and command")
        void testConstructorWithConfigAndCommand() {
            int command = 0x01;

        this.fileId = fileId;
    }

    @Override
    protected Smb2FlushResponse createResponse(final CIFSContext tc, final ServerMessageBlock2Request<Smb2FlushResponse> req) {
        return new Smb2FlushResponse(tc.getConfig());
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.RequestWithFileId#setFileId(byte[])
     */
    @Override
    public void setFileId(final byte[] fileId) {

        }
    }

    static FileEntry[] doNetShareEnum(final SmbTreeHandleImpl th) throws CIFSException {
        final SmbComTransaction req = new NetShareEnum(th.getConfig());
        final SmbComTransactionResponse resp = new NetShareEnumResponse(th.getConfig());
        th.send(req, resp);
        if (resp.getStatus() != WinError.ERROR_SUCCESS) {
            throw new SmbException(resp.getStatus(), true);
        }

                        log.debug("Unknown host", uhe);
                        if (this.ctx.getConfig().getDefaultDomain() == null) {
                            throw uhe;
                        }
                        this.addresses = this.ctx.getNameServiceClient().getAllByName(this.ctx.getConfig().getDefaultDomain(), true);
                    }
                } else if (path.length() == 0 || path.equals("/")) {