docs: public static void initializeForSorting(final SyndFeed feed) throws FeedException {
          // TODO: the null parameter below will break delegating parsers and generators
          // final ModuleGenerators g = new ModuleGenerators(feed.getFeedType() +
          // ITEM_MODULE_GENERATORS_POSFIX_KEY, null);
          final SyndFeedOutput output = new SyndFeedOutput();
          final Document document = output.outputJDom(feed);
          final SyndFeed copy = new SyndFeedInput().build(document);
          feed.copyFrom(copy);
      }