public async Task <IActionResult> Create([FromBody] SinhVienCreateRequest request)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }
            var ID_sinhVien = await _sinhVienService.Create(request);

            if (ID_sinhVien == null)
            {
                return(BadRequest());
            }

            var sinhVien = await _sinhVienService.GetById(ID_sinhVien);

            return(CreatedAtAction(nameof(GetById), new { id = ID_sinhVien }, sinhVien));
        }