public void AddPlanning(Guid movieId, Guid movieTheaterId, DateTime startTime, DateTime endTime) { var movieDb = GetById(movieId); var movieTheaterDb = movieTheaterRepository.GetById(movieTheaterId); var moviePlanningToAdd = MoviePlanning.Create(movieDb, movieTheaterDb, startTime, endTime); movieRepository.AddPlanning(moviePlanningToAdd); }