const QuantizationSpecs& previous_specs = config.specs();
  new_specs.mutable_specs()->Add(previous_specs.specs().begin(),
                                 previous_specs.specs().end());

  config.clear_weight_only_ptq_preset();
  config.mutable_specs()->Swap(&new_specs);
}

}  // namespace

QuantizationConfig ExpandPresets(const QuantizationConfig& config) {
  QuantizationConfig new_config = config;