std::shared_ptr<const tensorflow::NodeProperties> props;
  absl::Status status = tensorflow::NodeProperties::CreateFromNodeDef(
      *nodedef_or.value(),
      params_.function_library->GetFunctionLibraryDefinition(), &props);
  if (!status.ok()) {
    return op_->emitRemark()
           << "failed to create NodeProperties: " << status.ToString();
  }
  tensorflow::OpKernel* op_kernel_raw;