}

    if (quant_options_.quantization_method()
            .quantization_component_specs()
            .empty()) {
      auto add_new_spec =
          [this](QuantizationComponentSpec::QuantizationComponent component,
                 QuantizationComponentSpec::TensorType type) {
            QuantizationComponentSpec* new_spec =
                quant_options_.mutable_quantization_method()

_PresetMethod = _QuantizationMethod.PresetMethod
_CalibrationMethod = (
    stablehlo_quant_config_pb2.CalibrationOptions.CalibrationMethod
)

_QuantizationComponent = _QuantizationComponentSpec.QuantizationComponent
_TensorType = _QuantizationComponentSpec.TensorType

_RepresentativeDatasetFile = quant_opts_pb2.RepresentativeDatasetFile

# Mapping of signature def key -> SignatureDef.