explicit LiftQuantizableSpotsAsFunctionsDRQPass(
      const QuantMethod quantization_method, const OpSet target_opset,
      const int min_num_elements_for_weights) {
    quantization_method_ = quantization_method;
    target_opset_ = target_opset;
    min_num_elements_for_weights_ = min_num_elements_for_weights;
  }

  LiftQuantizableSpotsAsFunctionsDRQPass(
      const LiftQuantizableSpotsAsFunctionsDRQPass& other) {

  // supported for Post-training Dynamic Range Quantization. By default, it is
  // set to 1024. To disable this, set the value to -1 explicitly.
  int64 min_num_elements_for_weights = 8;

  // When set to `true`, freezes all variables in the model into constants.
  // When set to `false` the model's large constants are converted to variables.