@Override
    public String getCurrentServer() {
        return getServerList().get(currentIndex.get() % getServerList().size());
    }
@Test
    void testGetCurrentServer() {
        Properties properties = new Properties();
        properties.put(PropertyKeyConst.SERVER_ADDR, "127.0.0.1:8848");
        final ServerListManager serverListManager = new ServerListManager(properties);
        assertEquals("127.0.0.1:8848", serverListManager.getCurrentServer());
        assertEquals("127.0.0.1:8848", serverListManager.genNextServer());
    }