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.NOT_UNIQUE, CLASS_INFO_CLASS_NAME_KEY);
          keyArea.addKeyField(CLASS_INFO_CLASS_NAME, Constants.ASCENDING);
          keyArea.addKeyField(CLASS_FIELD_SEQUENCE, Constants.ASCENDING);
          keyArea.addKeyField(CLASS_FIELD_NAME, Constants.ASCENDING);
      }
docs: Set up the key areas.