base_model.dart

class BaseFirebaseModel<T> {
  final String id;
  final T? data;
  BaseFirebaseModel({
    required this.id,
    required this.data,
  });
}

firebase_list_mixin.dart

mixin FirebaseServiceManager {
  Future<List<BaseFirebaseModel<T>>?> getResponseList<T>(
      Future<FirestoreQuerySnapshot<FirestoreDocumentSnapshot>> reference) async {
    try {
      final response = await reference;

      return response.docs.map((e) {
        return BaseFirebaseModel<T>(id: e.id, data: e.data is T ? (e.data as T) : null);
      }).toList();
    } catch (e) {
      LoggerUtility.error('$e');
      return null;
    }
  }
}
//example getResponseList<VotCategoryModel>(categoryFirebaseReferance.get());