code: @Override
  	public void onFetchFinish(MessageManager manager, List<ApptentiveMessage> messages) {
  		if (isPolling()) {
  			long pollingInterval = getPollingInterval();
  			ApptentiveLog.v(MESSAGES, "Scheduled polling messages in %d sec", pollingInterval / 1000);
  			dispatchOnConversationQueueOnce(messagePollingTask, pollingInterval);
  		}
  	}
docs: region MessageFetchListener