code: public static String getPipeline(Long channelId, Long pipelineId) {
          // 根据channelId , pipelineId 构造path
          return MessageFormat.format(ArbitrateConstants.NODE_PIPELINE_FORMAT,
              String.valueOf(channelId),
              String.valueOf(pipelineId));
      }
docs: 返回对应的pipeline path (不依赖对应的config信息)