BookletModel constructor Null safety

BookletModel(
  1. {required String documentID,
  2. required String appId,
  3. String? description,
  4. List<SectionModel>? sections,
  5. StorageConditionsModel? conditions}
)

Implementation

BookletModel({
  required this.documentID,
  required this.appId,
  this.description,
  this.sections,
  this.conditions,
});