code: static void dumpConfiguration(Writer writer) throws IOException {
      Configuration conf = new Configuration(false);
      conf.addResource(QUEUE_ACLS_FILE_NAME);
      Configuration.dumpConfiguration(conf, writer);
    }
docs: prints the configuration of QueueManager in Json format.
  The method should be modified accordingly whenever
  QueueManager(Configuration) constructor is modified.
  @param writer {@link}Writer object to which the configuration properties
  are printed in json format
  @throws IOException