@Override
    protected boolean notExist() {
        return Stream.of(DefaultPathConstants.PLUGIN_PARENT,
                DefaultPathConstants.APP_AUTH_PARENT,
                DefaultPathConstants.META_DATA,
                DefaultPathConstants.PROXY_SELECTOR,
                DefaultPathConstants.DISCOVERY_UPSTREAM).noneMatch(etcdClient::exists);
    }
Instantiates a new Etcd data changed init.

@param etcdClient the etcdClient client
shenyu-admin-listener/shenyu-admin-listener-etcd/src/main/java/org/apache/shenyu/admin/listener/etcd/EtcdDataChangedInit.java