virtual ImmediateExecutionTensorHandle* CreateLocalHandle(
      AbstractTensorInterface* t) = 0;
  // Copy the handle to another device.
  virtual ImmediateExecutionTensorHandle* CopyTensorHandleToDevice(
      ImmediateExecutionTensorHandle* handle, const char* device_name,
      absl::Status* status) = 0;

  // Create an operation to perform op execution

    return nullptr;
  }

  tensorflow::ImmediateExecutionContext* unwrapped_ctx =
      tensorflow::unwrap(ctx);

  auto* result =
      unwrapped_ctx->GetCustomDeviceOpHandler().CopyTensorHandleToDevice(
          unwrapped_ctx, tensorflow::unwrap(h), device_name, &status->status);

  if (status->status.ok()) {
    return tensorflow::wrap(result);
  }
  return nullptr;
}