@Override
    public void batchRegisterService(String serviceName, String groupName, List<Instance> instances) {
        throw new UnsupportedOperationException(
                "Do not support persistent instances to perform batch registration methods.");
    }
@Test
    void testBatchRegisterService() {
        assertThrows(UnsupportedOperationException.class, () -> {
            clientProxy.batchRegisterService("a", "b", null);
        });
    }