@Bean
    @ConditionalOnMissingBean(EtcdDataChangedInit.class)
    public DataChangedInit etcdDataChangedInit(final EtcdClient etcdClient) {
        return new EtcdDataChangedInit(etcdClient);
    }
@Test
    public void testEtcdDataInit() {
        EtcdSyncConfiguration etcdListener = new EtcdSyncConfiguration();
        EtcdClient client = mock(EtcdClient.class);
        assertNotNull(etcdListener.etcdDataChangedInit(client));
    }