});

    // Set the test quantization method to static-range.
    if (quant_options_.quantization_method().preset_method() ==
        QuantizationMethod::METHOD_UNSPECIFIED) {
      quant_options_.mutable_quantization_method()->set_preset_method(
          QuantizationMethod::METHOD_STATIC_RANGE_INT8);
    }

    if (quant_options_.quantization_method()
            .quantization_component_specs()
            .empty()) {

    quant_spec.set_tensor_type(
        tensorflow::quantization::QuantizationComponentSpec::TENSORTYPE_INT_8);
    auto mutable_quant_method = quant_options_.mutable_quantization_method();
    *mutable_quant_method->add_quantization_component_specs() = quant_spec;
  }
};

// If a constant is connected to a quantizable op, quantize the constant to have
// the provided data type.

      // quantized by this transformation.
      const int kWeightsMinNumElementsDefault = 1024;

      quantization::QuantizationOptions quantization_options;

      quantization_options.mutable_quantization_method()->set_preset_method(
          quantization::QuantizationMethod::METHOD_DYNAMIC_RANGE_INT8);
      quantization_options.set_op_set(quantization::UNIFORM_QUANTIZED);