setCallback(new PageCallback(EditFlexibleDialPlan.PAGE));
    public void pageBeginRender(PageEvent event_) {        DialingRule rule = getRule();        if (null != rule) {            return;        }        Integer id = getRuleId();        if (null != id) {            DialPlanContext manager = getDialPlanManager();            rule = manager.getRule(id);        } else {            rule = createNewRule();        }        setRule(rule);    }