public async Task <ActionResult> DeleteQuestionnaire([FromRoute] Guid id)
        {
            await _treniruoteRepo.Delete(id);

            await _ivertotojai.DeleteAll(id);

            await _ipratymuSkaicius.DeleteAll(id);

            //need delete statistika????????????
            return(new AcceptedResult());
        }
        public async Task <ActionResult> DeleteQuestionnaire([FromRoute] Guid id)
        {
            await _pratymuSkaiciusRepo.DeleteAll(id);

            return(new AcceptedResult());
        }