public async Task <IHttpActionResult> DeleteCandidateTask(int id)
        {
            try
            {
                var result = _exerciseService.IsResultAssociatedWithTaskExist(id);
                if (result == true)
                {
                    await _exerciseService.SoftDeleteCandidateExerciseAsync(id);
                }
                else
                {
                    await _exerciseService.DeleteCandidateExerciseAsync(id);
                }

                return(StatusCode(HttpStatusCode.NoContent));
            }
            catch (ExerciseNotFoundException)
            {
                return(BadRequest($"Task with {nameof(id)} = {id} not found"));
            }
            catch (Exception)
            {
                return(InternalServerError());
            }
        }