code: public void setQueuesFromString(String queueList) {
  
      if (StringUtils.isNotBlank(queueList)) {
        String[] queues = queueList.split(Constants.SEP);
        for (String q : queues) {
          this.queues.add(q);
        }
      }
    }
docs: Adding to {@link Set} of queue names from a
  {@link String} representation
  @param {@link String}