private void UpdateDatabase()
        {
            List <DatabaseBackedObject> objectsToAdd = DefaultRepositoryData.BuildTestData();
            TrackerContext context = new TrackerContext();

            objectsToAdd.ForEach(x => context.Entry(x).State = System.Data.Entity.EntityState.Modified);
            context.SaveChanges();
        }
        private void FillDatabase()
        {
            List <DatabaseBackedObject> objectsToAdd = DefaultRepositoryData.BuildTestData();
            TrackerContext context = new TrackerContext();

            objectsToAdd.ForEach(x => context.Set(x.GetType()).Add(x));
            context.SaveChanges();
        }