code: public void setOwner(ListenerOwner owner)
      {
          super.setOwner(owner);
          if (this.getOwner() != null)
              this.getOwner().setOpenMode(this.getOwner().getOpenMode() | DBConstants.OPEN_REFRESH_AND_LOCK_ON_CHANGE_STRATEGY);    // Make sure keys are updated before sync
      }
docs: Set the field or file that owns this listener.
  @param owner My owner.