@Bean
    @ConditionalOnMissingBean(EtcdDataChangedInit.class)
    public DataChangedInit etcdDataChangedInit(final EtcdClient etcdClient) {
        return new EtcdDataChangedInit(etcdClient);
    }
data init.

@param etcdClient the etcd client
@return the etcd data init
shenyu-admin-listener/shenyu-admin-listener-etcd/src/main/java/org/apache/shenyu/admin/config/EtcdSyncConfiguration.java