public async Task <IResult> DeleteStudentWithAddressAsync(int id)
        {
            var student = GetStudentByIdAsync(id);

            if (student == null)
            {
                return(new ErrorResult(HttpStatusCode.NotFound));
            }

            await _studentDal.DeleteAsync(new Student { Id = id });

            return(new SuccessfulResult(HttpStatusCode.OK));
        }