TfLiteRegistration* Register_SUM_REF() {
  static TfLiteRegistration r = {reduce::Init, reduce::Free,
                                 reduce::PrepareMeanOrSum, reduce::EvalSum};
  return &r;
}
TfLiteRegistration* Register_SUM_REF() {
  static TfLiteRegistration r = {reduce::Init, reduce::Free,
                                 reduce::PrepareMeanOrSum, reduce::EvalSum};
  return &r;
}