"Unable to delete group: " + e.getMessage()
"unable to delete group: " + e.getMessage()
  public void delete()     throws GroupDeleteException, InsufficientPrivilegeException  {    try {      HibernateHelper.delete(this);    }    catch (HibernateException e) {      throw new GroupDeleteException(        "Unable to delete group: " + e.getMessage()      );    }  }