code: @Override
      public List<AgendaEventListener> getAgendaEventListeners(RuntimeEngine runtime) {
          List<AgendaEventListener> list = new ArrayList<AgendaEventListener>();
          list.addAll(_rootFactory.getAgendaEventListeners(runtime));
          for (RegisterableItemsFactory f : _factories) {
              list.addAll(f.getAgendaEventListeners(runtime));
          }
          return list;
      }
docs: {@inheritDoc}