public void AddActivityToAnalysisRequest(AnalysisRequest request, AnalysisRequestActivity activity)
        {
            request.Activities.Add(activity);

            activity.Date            = DateTime.Now;
            activity.AnalysisRequest = request;

            context.SaveChanges();
        }
        public void AddActivityToAnalysisRequest(int requestId, AnalysisRequestActivity activity)
        {
            var request = Get(requestId);

            request.Activities.Add(activity);

            activity.Date            = DateTime.Now;
            activity.AnalysisRequest = request;

            context.SaveChanges();
        }