code: public void updateConfig(AbstractInterfaceConfig config, String configPath, ChildData data) {
          if (data == null) {
              if (LOGGER.isInfoEnabled(config.getAppName())) {
                  LOGGER.infoWithApp(config.getAppName(), "Receive update data is null");
              }
          } else {
              if (LOGGER.isInfoEnabled(config.getAppName())) {
                  LOGGER.infoWithApp(config.getAppName(), "Receive update data: path=[" + data.getPath() + "]"
                      + ", data=[" + StringSerializer.decode(data.getData()) + "]"
                      + ", stat=[" + data.getStat() + "]");
              }
              notifyListeners(config, configPath, data, false);
          }
      }
docs: 接口配置修改子节点Data
  
  @param config     接口配置
  @param configPath 配置Path
  @param data       子节点Data