public IEnumerable<ScrumStoryServiceModel> getStoriesByBlocked(bool blocked)
        {
            ScrumStoryRepository repo = new ScrumStoryRepository(entities);
            IEnumerable<ScrumStory> stories = repo.getStoriesByBlocked(blocked);
            List<ScrumStoryServiceModel> models = new List<ScrumStoryServiceModel>();

            foreach (ScrumStory story in stories) {
                models.Add(ScrumUtil.mapScrumStoryEntityToModel(story));
            }

            return models;
        }