if (isa<tracing::TracingOperation>(op.get())) {
    TF_RETURN_IF_ERROR(dyn_cast<tracing::TracingOperation>(op.get())->SetOpName(
        absl::StrCat("OnesLike", ToId(t.GetHandle())).c_str()));
  }
  TF_RETURN_IF_ERROR(op->AddInput(t.GetHandle()));
  int num_outputs = 1;
  std::vector<AbstractTensorHandle*> outputs(num_outputs);
  TF_RETURN_IF_ERROR(
      op->Execute(absl::Span<AbstractTensorHandle*>(outputs), &num_outputs));

  TapeTensor(const TapeTensor& other);
  ~TapeTensor();

  int64_t GetID() const;
  tensorflow::DataType GetDType() const;

  AbstractTensorHandle* ZerosLike() const;

  AbstractTensorHandle* GetHandle() const;

 private:
  AbstractTensorHandle* handle_;
};

// A tracing/immediate-execution agnostic tape.
//
// Gradient functions defined for this tape must support handling null incoming

    protected int max_recv = max_xmit;
    protected int state = 0;
    protected DcerpcSecurityProvider securityProvider = null;
    private static int call_id = 1;

    public static DcerpcHandle getHandle(String url,
                NtlmPasswordAuthentication auth)
                throws UnknownHostException, MalformedURLException, DcerpcException {
        if (url.startsWith("ncacn_np:")) {

        }
    }


    @Test
    public void testBindingAddress () throws DcerpcException, MalformedURLException, CIFSException, IOException {
        try ( DcerpcHandle h = DcerpcHandle
                .getHandle(String.format("ncacn_np:%s[endpoint=%s,address=%s]", "testing", "\\pipe\\srvsvc", "1.2.3.4"), getContext()) ) {

            assertEquals("testing", h.getServer());

//        SmbTransport trans = SmbTransport.getSmbTransport(dc, 0);
//        DfsReferral[] dr = trans.getDfsReferrals(auth, "\\" + domainName, 1);
//
//        handle = DcerpcHandle.getHandle("ncacn_np:" +
//                    UniAddress.getByName(dr[0].server).getHostAddress() +
//                    "[\\PIPE\\netdfs]", auth);
//        try {
//            rpc = new MsrpcDfsRootEnum(domainName);

        }
    }
    FileEntry[] doDfsRootEnum() throws IOException {
        MsrpcDfsRootEnum rpc;
        DcerpcHandle handle = null;
        FileEntry[] entries;

        handle = DcerpcHandle.getHandle("ncacn_np:" +
                    getAddress().getHostAddress() +
                    "[\\PIPE\\netdfs]", auth);
        try {
            rpc = new MsrpcDfsRootEnum(getServer());
            handle.sendrecv(rpc);

            ACE[] aces;
            MsrpcShareGetInfo rpc = new MsrpcShareGetInfo(server, th.getConnectedShare());
            try ( DcerpcHandle handle = DcerpcHandle.getHandle("ncacn_np:" + server + "[\\PIPE\\srvsvc]", getContext()) ) {
                handle.sendrecv(rpc);
                if ( rpc.retval != 0 ) {
                    throw new SmbException(rpc.retval, true);
                }