if (TF_GetCode(status) != TF_OK) return nullptr;
    TFE_OpSetDevice(const_op.get(), underlying_devices_[device_index].c_str(),
                    status);
    if (TF_GetCode(status) != TF_OK) return nullptr;
    TFE_OpSetAttrTensor(const_op.get(), "value", tensor.get(), status);
    if (TF_GetCode(status) != TF_OK) return nullptr;
    TFE_OpSetAttrType(const_op.get(), "dtype", datatype_enum);
    TFE_TensorHandle* device_handle;

  auto s = tensorflow::unwrap(op)->SetAttrFunctionName(attr_name, data, length);
  if (!s.ok()) {
    LOG(WARNING) << "Unable to set attribute: " << attr_name;
  }
}

void TFE_OpSetAttrTensor(TFE_Op* op, const char* attr_name, TF_Tensor* tensor,
                         TF_Status* status) {
  tensorflow::Tensor t;
  status->status = TF_TensorToTensor(tensor, &t);
  tensorflow::TensorInterface interface(t);