Issue with JsonSerializable and contructor with none or one argument

[fatshady]

Hi,
Given an example dto like the following, with serializable's toJson / fromJson methods

@JsonSerializable(explicitToJson: true)
class ActivityAssetsDto {
  @JsonKey(name: 'image')
  final String imageUrl;

  const ActivityAssetsDto({this.imageUrl = ""});

  factory ActivityAssetsDto.fromJson(Map<String, dynamic> json) =>
      _$ActivityAssetsDtoFromJson(json);

  Map<String, dynamic> toJson() => _$ActivityAssetsDtoToJson(this);
}

it generates

@override
  ActivityAssetsDto fromActivityAssets(ActivityAssets entity) {
    final activityassetsdto = ActivityAssetsDto.fromJson();
    return activityassetsdto;
  }

using "fromJson()" as constructor (obviously without parameter since it doesn't know what tu put there)

if I add a second parameter to the ActivityAssetsDto constructor the generator picks the correct constructors without problems.
It seems that the strategy of getting the constructor with the most arguments does not always work.

thank you for your time