docs: public static Feed buildFeed(FeedDesc feedDesc){
      Feed feed = null;
      NitFactory nitFactory = new NitFactory();
      NitDesc nitDesc = nitDescFromDynamic(feedDesc);
      nitDesc.setConstructorParameters(new Class [] { Map.class });
      nitDesc.setConstructorArguments(new Object[] { feedDesc.getProperties() });
      try {
        feed = nitFactory.construct(nitDesc);
      } catch (NitException e) {
        throw new RuntimeException(e);
      }
      return feed;
    }