raise ValueError(
          'Currently unit-wise quantization spec only supports NO_QUANTIZE and'
          ' same quantization method as the top-level `quantization_method`'
      )


def _populate_calibration_options(
    quantization_options: quant_opts_pb2.QuantizationOptions,
):
  """Populates default values for CalibrationOptions.

  Args:
    quantization_options: An instance of QuantizationOptions with a field