Auth0 manager for mobile - for medium article

auth0_manager.dart

import 'package:flutter_auth0/flutter_auth0.dart';
//other imports
class Auth0Manager extends AuthManager {
  @override
  Future<User> login([Map<String, String> authResponse]) async {
   //stuff that uses classic dart.io
  }

  @override
  Future<User> userFromTokens(String idToken, String accessToken) async {
   //stuff that uses classic dart.io
  }

  @override
  Future<void> logout() async {
   //stuff that uses classic dart.io
  }
}