# fromEntity method Null safety

dynamic fromEntity(

1. String documentID,
2. TutorialEntity? entity

)

## Implementation

    static Future<TutorialModel?> fromEntity(
        String documentID, TutorialEntity? entity) async {
      if (entity == null) return null;
      var counter = 0;
      return TutorialModel(
        documentID: documentID,
        appId: entity.appId ?? '',
        name: entity.name,
        title: entity.title,
        description: entity.description,
        tutorialEntries: entity.tutorialEntries == null
            ? null
            : List<TutorialEntryModel>.from(
                await Future.wait(entity.tutorialEntries!.map((item) {
                counter++;
                return TutorialEntryModel.fromEntity(counter.toString(), item);
              }).toList())),
        conditions: await StorageConditionsModel.fromEntity(entity.conditions),
      );
    }