getstream_chat_service2.dart

  @override
  Future<void> disconnectUser() async {
    await streamChatClient.disconnectUser();
  }

  @override
  Future<void> connectTheCurrentUser() async {
    final signedInUserOption = await _firebaseAuth.getSignedInUser();

    final signedInUser = signedInUserOption.fold(
      () => throw Exception("Not authanticated"),
      (user) => user,
    );

    await streamChatClient.connectUser(
      User(
        id: signedInUser.id,
        name: signedInUser.userName,
        image: signedInUser.photoUrl,
      ),
      devToken,
    );
  }