Realtime database Provider Flutter stream events

Question

I am trying to stream events from a particular child node in Realtime database using Provider in flutter. I have created a Provider Class as below

class RTDBService {
  FirebaseDatabase database = FirebaseDatabase.instance;

  StreamSubscription<DatabaseEvent> getCurrencies() {
    return database.ref('Currencies').onValue.listen((event){
            final data = Map<String, dynamic>.from(event.snapshot.value);
            final currencyList = Currency.fromJson(data);
            return currencyList;
          });
  }
}

The Currency class is as below import 'package:cloud_firestore/cloud_firestore.dart';

class Currency {
  final List? name;

  final Timestamp? lastDatabaseTimeUpdated;

  Currency({
    this.name,
    this.lastDatabaseTimeUpdated,
  });

  factory Currency.fromJson(Map<String, dynamic> json) {
    return Currency(
        name: json['rates'] as List,
        lastDatabaseTimeUpdated: json['lastDatabaseTimeUpdated'] as Timestamp);
  }
}

and the provider is wrapped as below

MultiProvider(
        providers: [
          Provider<RTDBService>(
            create: (_) => RTDBService(),
          ),
          StreamProvider(
            initialData: null,
            create: (context) => context.read<RTDBService>().getCurrencies(),
          ),
        ],

There are so many tutorials explaining how to use Provider with Firestore but close to none pointing how to use Provider with Realtime Database How can I go about streaming these events using Provider. A link to an article detailing the use of Provider with Realtime Database with flutter would also be welcome