docs: public void setupKeys()
      {
          KeyAreaInfo keyArea = null;
          keyArea = new KeyAreaInfo(this, Constants.UNIQUE, ID_KEY);
          keyArea.addKeyField(ID, Constants.ASCENDING);
          keyArea = new KeyAreaInfo(this, Constants.UNIQUE, MESSAGE_PROCESS_INFO_ID_KEY);
          keyArea.addKeyField(MESSAGE_PROCESS_INFO_ID, Constants.ASCENDING);
          keyArea.addKeyField(MESSAGE_TRANSPORT_ID, Constants.ASCENDING);
          keyArea.addKeyField(MESSAGE_VERSION_ID, Constants.ASCENDING);
      }