code: public Map<String, Long> getAllQueueDetails() {
          return queueDAO.queuesDetail().entrySet().stream()
                  .sorted(Comparator.comparing(Entry::getKey))
                  .collect(Collectors.toMap(Entry::getKey, Entry::getValue, (v1, v2) -> v1, LinkedHashMap::new));
      }
docs: Get the details about each queue.
  
  @return map of details about each queue.