fromJson static method
Implementation
@visibleForTesting
static DetectFacesAttributeResult? fromJson(jsonObject) {
  if (jsonObject == null) return null;
  var result = DetectFacesAttributeResult._privateConstructor();
  result._attribute =
      DetectFacesAttribute.getByValue(jsonObject["attribute"])!;
  result._confidence = _toDouble(jsonObject["confidence"]);
  result._value = jsonObject["value"];
  result._range = ImageQualityRange.fromJson(jsonObject["range"]);
  return result;
}