absl::StatusOr<ExportedModel> exported_model = ModuleOpToExportedModel(
      *cloned_module_ref, context, kTfQuantPtqPreCalibrationStepName,
      /*unfreeze_constants=*/!quantization_options.freeze_all_variables(),
      function_aliases);
  if (!exported_model.status().ok()) {
    return absl::InternalError(
        absl::StrCat("Failed to export calibration model: ",

    quantization_options.signature_keys.append(
        signature_constants.DEFAULT_SERVING_SIGNATURE_DEF_KEY
    )

  if not quantization_options.HasField('freeze_all_variables'):
    quantization_options.freeze_all_variables = True

  if quantization_options.enable_legacy_weight_only:
    raise ValueError(
        'Legacy weight-only is deprecated. Use weight-only quantization method.'
    )