public static dto.Address ToDTO(this bll.Address bll)
        {
            dto.Address dto = new dto.Address();

            dto.Id     = bll.Id;
            dto.Street = bll.Street;
            dto.Number = bll.Number;
            dto.Box    = bll.Box;
            dto.CityId = bll.City.Id;

            return(dto);
        }
        public static bll.Address ToBLL(this dto.Address dto)
        {
            bll.Address bll = new bll.Address(dto.CityId);

            bll.Id     = dto.Id;
            bll.Street = dto.Street;
            bll.Number = dto.Number;
            bll.Box    = dto.Box;
            //bll.City = cities.Get(dto.CityId);

            return(bll);
        }