return {};
  }
  SmallVector<UniformQuantizedValueConverter, 4> converters;
  converters.reserve(dim_size);
  for (int i = 0, e = dim_size; i != e; ++i) {
    converters.push_back(getPerChunkConverter(i));
  }

  // Scan the elements of the dense elements attributes and quantize them by
  // using the right quantization parameters.
  int64_t flatten_index = 0;
  auto shape = type.getShape();

  // Get a uniform converter for the index-th chunk along the quantizationDim.
  // All the elements in this chunk is quantized by the returned converter.
  UniformQuantizedValueConverter getPerChunkConverter(int index) const {
    return UniformQuantizedValueConverter(scales_[index], zero_points_[index],
                                          clamp_min_, clamp_max_,