if (aggregator_ops_to_ignore.count(op.getId().str())) continue;

    ids.push_back(op.getId());
    calibration_methods.push_back(op.getCalibrationMethod());
    statistics_outputs.push_back(op.getMin());
    statistics_outputs.push_back(op.getMax());
    statistics_outputs.push_back(op.getHistogram());
  }
}

// Inserts a `CalibrationStatisticsSaverOp` to the end of the region.

      if (wordStart) {
        result.push_back(delimiter);
      }
      wordStart = true;
      continue;
    }
    if (!from_snake && isupper(c)) {
      wordStart = true;
    }

    // add delimiter
    if (wordStart && toSnake && !inputStart) {
      result.push_back(delimiter);
    }

    // add the next letter from the input string (choosing upper/lower case)

        const std::vector<std::string> indices =
            absl::StrSplit(node_specification, '-');
        for (const std::string& cur_index : indices) {
          custom_op_map[node_name].quantizable_input_indices.push_back(
              std::stoi(cur_index));
        }
        break;
      }
      case CustomOpUpdateOptions::kWeightOnly:
        custom_op_map[node_name].is_weight_only =
            GetBooleanSpecs(node_specification);

  if (!main_fn) return std::string("");

  flatbuffers::FlatBufferBuilder fb_builder;
  std::vector<mlir::func::FuncOp> funcs;
  funcs.push_back(main_fn);
  module.walk([&](mlir::func::FuncOp fn) {
    if (fn != main_fn) {
      funcs.push_back(fn);
    }
  });

  // Populate the hardware metadata.
  // And collect the hardwares used.
  std::map<std::string, uint8_t> hardware_map;

  output_tensor_names.reserve(fetch_outputs.size());
  for (auto const& output : fetch_outputs) {
    output_tensor_names.push_back(output.name());
  }
  std::vector<string> target_node_names;
  target_node_names.reserve(run_outputs.size());
  for (auto const& output : run_outputs) {
    target_node_names.push_back(output.node()->name());
  }
  TF_RETURN_IF_ERROR(impl()->MaybeExtendGraph());

    func_operand_types.reserve(operands.size());
    for (Value operand : operands)
      func_operand_types.push_back(operand.getType());

    // Function results are the yield operands
    SmallVector<Type, 16> func_result_types;
    for (Value operand : island_op.GetYield().getOperands())
      func_result_types.push_back(operand.getType());
    FunctionType func_type =

  for (const Value &arg : cluster_func_op.getOperands()) {
    if (!mlir::isa<TF::ResourceType>(getElementTypeOrSelf(arg.getType()))) {
      non_resource_args.push_back(arg);
      if (has_resources) in_order = false;
    } else {
      resource_args.push_back(arg);
      has_resources = true;
    }
  }

  if (!in_order) {
    // Functions do not get reused in practice, so skip the check for if the

    for (const mlir::Type &t : types) {
      if (mlir::isa<mhlo::TokenType>(t)) continue;
      auto layout = GetTPUInfeedLayout({t}, rewriter);
      if (failed(layout)) return failure();
      v.push_back(layout.value());
    }
    ArrayRef<Attribute> shape(v);
    return rewriter.getArrayAttr(shape);
  } else if (mlir::isa<TupleType>(types[0])) {
    auto tuple_type = mlir::dyn_cast<TupleType>(types[0]);

    inputs.push_back(preceding_const_op.getValue());
  }

  SmallVector<Attribute> result_values;
  if (failed(TF::EvaluateOperation(op, inputs, result_values))) {
    return failure();
  }

  results.clear();
  builder.setInsertionPointAfter(op);
  for (const auto& result_value : result_values) {
    results.push_back(builder.create<TF::ConstOp>(op->getLoc(), result_value));
  }

        input_tensor->quantization->scale.clear();
        input_tensor->quantization->zero_point.clear();
        input_tensor->quantization->min.push_back(-1.0);
        input_tensor->quantization->max.push_back(1.0);

        auto& output_tensor = sub_graph->tensors[op->outputs[0]];
        auto shape = output_tensor->shape;
        output_tensor->quantization->scale.clear();