public async Task <ActionResult <int> > PostLecturalInTimetable(string lecturalOlD, string lecturalNew)
        {
            //Response
            var result = await _timetableService.ChangeLecturalInTimetable(lecturalOlD, lecturalNew);

            if (result == -1)
            {
                return(NotFound());
            }
            return(result);
        }