public static String getIndexFilePath(String brokerName) {
        return toFilePath(new MessageQueue(RMQ_SYS_TIERED_STORE_INDEX_TOPIC, brokerName, 0));
    }
@Test
    public void indexServicePathTest() {
        Assert.assertEquals("brokerName/rmq_sys_INDEX/0", MessageStoreUtil.getIndexFilePath("brokerName"));
    }