if (!IsRefType(context->input_dtype(0))) {
    tf_status->status =
        InvalidArgument("TF_DestroyTemporaryVariable requires input is ref");
    return;
  }
  Tensor tmpvar = context->mutable_input(0, false);
  context->set_output(0, tmpvar);

  tensorflow::ResourceMgr* rm = context->resource_manager();
  OP_REQUIRES(context, rm,
              absl::InternalError("No per-step resource manager."));