public async Task<Genre> GetPreferedMovieGenre(int userId)
        {
            Dictionary<string, int> dict = new Dictionary<string, int>();
            List<Movie> moviesRatedByUser = await GetMoviesRatedByUserId(userId);
            foreach (Movie mov in moviesRatedByUser)
            {
                RatedMovie rm = GetRatedMovieByUserAndMovie(userId, mov.Id);
                foreach (Genre gen in mov.Genres)
                {
                    if (dict.ContainsKey(gen.Name))
                    {
                        dict[gen.Name] += rm.Score;
                    } else
                    {
                        dict.Add(gen.Name, rm.Score);
                    }
                }
            }
            var list = dict.ToList();
            list.Sort((pair1, pair2) => pair2.Value.CompareTo(pair1.Value));
            return GetGenreByName(list[0].Key);
        }