*[<Null safety>](https://dart.dev/null-safety)*
Future<void> connectToService (String serviceName, Channel? channel)
@override Future<void> connectToService(String serviceName, Channel? channel) async { final connectorThunk = _connectorThunks[serviceName]; if (connectorThunk != null) { connectorThunk(channel); } else { channel!.close(); } }