public Dictionary<Guid, AnswersSummary> Get(Guid surveyId)
        {
            var survey = this.surveyRepository.Get(surveyId);

            if (survey == null)
            {
                throw this.WebException(HttpStatusCode.NotFound);
            }

            var submissionSummaryService = new SubmissionSummaryService(this.surveyRepository);
            var summary = submissionSummaryService.GetSubmissionsSummary(surveyId);

            return summary;
        }
        public object GetService(Type serviceType)
        {
            var repository = new SurveyRepository();

            if (serviceType == typeof(SurveyController))
            {
                return new SurveyController(repository);
            }
            else if (serviceType == typeof(SurveySubmissionController))
            {
                var submissionSummaryService = new SubmissionSummaryService(repository);
                return new SurveySubmissionController(repository, submissionSummaryService);
            }

            return null;
        }