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