code: public void storeUsingSubBeans(List articles, List persons)
      {
          //store all objects
          ArticleManagerPBLocal am = getArticleManager();
          PersonManagerPBLocal pm = getPersonManager();
          am.storeArticles(articles);
          pm.storePersons(persons);
      }
docs: Stores article and persons using other beans.
  
  @ejb:interface-method