public ModelToModel GetAll()
        {
            ModelToModel mm;

            mm = new ModelToModel();

            mm.streetTypes = new List<StreetType>();
            using (BookMarketDbContext db = new BookMarketDbContext())
            {
                foreach (StreetType entry in db.GetAllStreetTypes())
                {
                    mm.streetTypes.Add(entry);
                }
            }
            return mm;
        }