private static async Task BuildRelations(Screening entity, ICinemaDbContext context)
        {
            entity.Hall = await context.Halls.FindAsync(entity.HallId);

            entity.Movie = await context.Movies.FindAsync(entity.MovieId);

            entity.Pricing = await context.Pricing.FindAsync(entity.PricingId);
        }
 private static void UpdateRelations(Screening oldEnt, Screening newEnt)
 {
     oldEnt.HallId    = newEnt.HallId;
     oldEnt.MovieId   = newEnt.MovieId;
     oldEnt.PricingId = newEnt.PricingId;
 }