# fromMap method Null safety

TutorialEntity? fromMap(

1. Object? o,
2. {Map<String, String>? newDocumentIds}

)

## Implementation

    static TutorialEntity? fromMap(Object? o,
        {Map<String, String>? newDocumentIds}) {
      if (o == null) return null;
      var map = o as Map<String, dynamic>;

      var tutorialEntriesFromMap = map['tutorialEntries'];
      List<TutorialEntryEntity> tutorialEntriesList;
      if (tutorialEntriesFromMap != null) {
        tutorialEntriesList = (map['tutorialEntries'] as List<dynamic>)
            .map((dynamic item) => TutorialEntryEntity.fromMap(item as Map,
                newDocumentIds: newDocumentIds)!)
            .toList();
      } else {
        tutorialEntriesList = [];
      }
      var conditionsFromMap = map['conditions'];
      if (conditionsFromMap != null) {
        conditionsFromMap = StorageConditionsEntity.fromMap(conditionsFromMap,
            newDocumentIds: newDocumentIds);
      }

      return TutorialEntity(
        appId: map['appId'],
        name: map['name'],
        title: map['title'],
        description: map['description'],
        tutorialEntries: tutorialEntriesList,
        conditions: conditionsFromMap,
      );
    }