code: String createQueueListValue(JobDetails jobDetails, String existingQueues) {
      /*
       * check if queue already exists append separator at the end to avoid
       * "false" queue match via substring match
       */
      String queue = jobDetails.getQueue();
      queue = queue.concat(Constants.SEP);
  
      if (existingQueues == null) {
        return queue;
      }
  
      if (!existingQueues.contains(queue)) {
        existingQueues = existingQueues.concat(queue);
      }
      return existingQueues;
    }
docs: looks at {@Link String} to see if queue name already is stored, if not,
  adds it
  @param {@link JobDetails}
  @param {@link Result}
  @return queue list