anchor.diff:      int pageSize = 10,
       FirestoreLoadingBuilder? loadingBuilder,
       FirestoreErrorBuilder? errorBuilder,
  +    FirestoreEmptyBuilder? emptyBuilder,
       Axis scrollDirection = Axis.vertical,
       bool reverse = false,
       ScrollController? controller,
  
positive.code:   StackTrace stackTrace,
  );
  
  /// {@template firebase_ui.firestorelistview}
  /// A [ListView.builder] that obtains its items from a Firestore query.
  ///
  
negative.code:               );
              }
  
              if (snapshot.docs.isEmpty && emptyBuilder != null) {
                return emptyBuilder(context);
              }
  
              return ListView.builder(
                itemCount: snapshot.docs.length,
                itemBuilder: (context, index) {
  