code: public Collection<Story> getIdentifiedStories(StoryFilter filter) {
          filter = (filter != null) ? filter : new StoryFilter();
  
          filter.identifiedIn.clear();
          filter.identifiedIn.add(this);
          return getInstance().get().story(filter);
      }
docs: A read-only collection of Stories Identified in the Retrospective.
  
  @param filter filter for getting list of stories.
  @return collection of Stories Identified in the Retrospective.