internal void createSampleData(bool isFullDataNeeded)
        {
            if (isFullDataNeeded)
            {
                ClientVM _clientVM = new ClientVM(_dataContext);
                _clientVM.createSampleClients();

                MoviesVM _moviesVM = new MoviesVM(_dataContext);
                _moviesVM.createSampleMovies();
            }

            UserVM _userVM = new UserVM(_dataContext);
            _userVM.createDefaultUser();
        }