code: public void setupKeys()
      {
          KeyAreaInfo keyArea = null;
          keyArea = new KeyAreaInfo(this, Constants.UNIQUE, ID_KEY);
          keyArea.addKeyField(ID, Constants.ASCENDING);
          keyArea = new KeyAreaInfo(this, Constants.SECONDARY_KEY, NAME_KEY);
          keyArea.addKeyField(NAME, Constants.ASCENDING);
          keyArea = new KeyAreaInfo(this, Constants.NOT_UNIQUE, CODE_KEY);
          keyArea.addKeyField(CODE, Constants.ASCENDING);
          keyArea = new KeyAreaInfo(this, Constants.NOT_UNIQUE, EXTERNAL_QUEUE_NAME_KEY);
          keyArea.addKeyField(EXTERNAL_QUEUE_NAME, Constants.ASCENDING);
      }
docs: Set up the key areas.