public async Task <ClassroomResponseDto> SaveClassroom(ClassroomRequestDto classroomRequest)
        {
            var classroom      = _mapper.Map <Classroom>(classroomRequest);
            var savedClassroom = await _classroomRepository.SaveClassroom(classroom);

            var classroomResponse = _mapper.Map <ClassroomResponseDto>(savedClassroom);

            return(classroomResponse);
        }