public static String serialize(AbstractHealthChecker healthChecker) {
        try {
            return MAPPER.writeValueAsString(healthChecker);
        } catch (JsonProcessingException e) {
            throw new NacosSerializationException(healthChecker.getClass(), e);
        }
    }
@Test
    void testSerializeNoRegister() {
        NoRegisterHealthChecker noRegister = new NoRegisterHealthChecker();
        assertFalse(HealthCheckerFactory.serialize(noRegister).contains("no register"));
    }