下文中jlOrgLinkBllProxy的含义，是怎么定义的？

Question

  /**    * 静态构造方法    */    public static IJlOrgLinkBll getInstance() throws Exception {        try{        IJlOrgLinkBll dao = (IJlOrgLinkBll)MainframeBeanFactory.getBeanFactory().getBean("jlOrgLinkBllProxy");        return dao;        }catch(Exception e) {        e.printStackTrace();        throw new Exception(" JlOrgLinkBll，调用getInstance（ ）方法出错") ;        }    }