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;
        }