TfLiteRegistration* Register_ASSIGN_VARIABLE() {
  static TfLiteRegistration r = {nullptr, nullptr, assign_variable::Prepare,
                                 assign_variable::Eval};
  return &r;
}
TfLiteRegistration* Register_ASSIGN_VARIABLE() {
  static TfLiteRegistration r = {nullptr, nullptr, assign_variable::Prepare,
                                 assign_variable::Eval};
  return &r;
}