public ServiceInfo getServiceInfo() {
        return serviceInfo;
    }
@Test
    void testDeserialize() throws JsonProcessingException {
        String json = "{\"resultCode\":200,\"errorCode\":0,\"serviceInfo\":{\"cacheMillis\":1000,\"hosts\":[],"
                + "\"lastRefTime\":0,\"checksum\":\"\",\"allIPs\":false,\"reachProtectionThreshold\":false,"
                + "\"valid\":true},\"success\":true}";
        SubscribeServiceResponse response = mapper.readValue(json, SubscribeServiceResponse.class);
        assertNotNull(response.getServiceInfo());
    }