# FaderModel constructor Null safety

FaderModel(

1. {required String documentID,
2. required String appId,
3. String? description,
4. int? animationMilliseconds,
5. int? imageSeconds,
6. List<ListedItemModel>? items,
7. BackgroundModel? background,
8. StorageConditionsModel? conditions}

)

## Implementation

    FaderModel({
      required this.documentID,
      required this.appId,
      this.description,
      this.animationMilliseconds,
      this.imageSeconds,
      this.items,
      this.background,
      this.conditions,
    });