code: @Deprecated
    public static URI translateToOldSchema(Configuration clusterConf, String nameserviceId) {
      String key = FSConstants.DFS_NAMENODE_RPC_ADDRESS_KEY + "." + nameserviceId;
      String value = clusterConf.get(key);
      if (value == null) {
        throw new IllegalArgumentException(
            "Cannot translate to old schema for nameserviceId: " + nameserviceId);
      }
      InetSocketAddress address = NetUtils.createSocketAddr(value);
      return NameNode.getUri(address);
    }
docs: Translates nameserviceId to ZK key in deprecated layout