anchor.diff:        player: ValueHelper.cast(
           value: json['player'],
           type: CastType.string,
  +        nullEmptyString: false,
         ),
         product: ValueHelper.cast(
           value: json['product'],
           type: CastType.string,
  +        nullEmptyString: false,
         ),
         progressPercent: ValueHelper.cast(
           value: json['progress_percent'],
  
positive.code:       title: ValueHelper.cast(
          value: json['title'],
          type: CastType.string,
        ),
        transcodeDecision: ValueHelper.cast(
          value: json['transcode_decision'],
  
negative.code:       streamSubtitleCodec: ValueHelper.cast(
          value: json['stream_subtitle_codec'],
          type: CastType.string,
          nullEmptyString: false,
        ),
        streamSubtitleDecision: ValueHelper.cast(
          value: json['stream_subtitle_decision'],
  