code: void handleDataToListener(String dataId, ConsumerConfig config, ProviderInfoListener listener) {
          if (!canNotify()) {
              return;
          }
          if (lastUserData != null) {
              ComposeUserData composeUserData = composeUserAndConfigData(lastUserData, lastConfigData);
              notifyToListener(listener, composeUserData);
          }
      }
docs: 单独通知某个Listener
  
  @param dataId   订阅关键字
  @param config   服务端订阅者配置
  @param listener 服务列表监听器