code: public String createChannel(String ccid, String atmosphereTrackingId) {
  
          throwExceptionIfTrackingIdnotSet(atmosphereTrackingId);
  
          log.info("CREATE channel for cluster controller: {} trackingId: {} ", ccid, atmosphereTrackingId);
          Broadcaster broadcaster = null;
          // look for an existing broadcaster
  
          BroadcasterFactory defaultBroadcasterFactory = BroadcasterFactory.getDefault();
          if (defaultBroadcasterFactory == null) {
              throw new JoynrHttpException(500, 10009, "broadcaster was null");
          }
  
          broadcaster = defaultBroadcasterFactory.lookup(Broadcaster.class, ccid, false);
          // create a new one if none already exists
          if (broadcaster == null) {
              broadcaster = defaultBroadcasterFactory.get(BounceProxyBroadcaster.class, ccid);
  
          }
  
          // avoids error where previous long poll from browser got message
          // destined for new long poll
          // especially as seen in js, where every second refresh caused a fail
          for (AtmosphereResource resource : broadcaster.getAtmosphereResources()) {
              if (resource.uuid() != null && resource.uuid().equals(atmosphereTrackingId)) {
                  resource.resume();
              }
          }
  
          UUIDBroadcasterCache broadcasterCache = (UUIDBroadcasterCache) broadcaster.getBroadcasterConfig()
                                                                                    .getBroadcasterCache();
          broadcasterCache.activeClients().put(atmosphereTrackingId, System.currentTimeMillis());
  
          // BroadcasterCacheInspector is not implemented corrected in Atmosphere
          // 1.1.0RC4
          // broadcasterCache.inspector(new MessageExpirationInspector());
  
          return "/channels/" + ccid + "/";
      }
docs: Creates a long polling channel.
  
  @param ccid
  the identifier of the channel
  @param atmosphereTrackingId
  the tracking ID of the channel
  @return the path segment for the channel. The path, appended to the base
  URI of the channel service, can be used to post messages to the
  channel.