return principalName;
    }


    public static Subject getInitiatorSubject ( String userName, String password, String realm, Long expire ) throws Exception {
        KerberosPrincipal principal = new KerberosPrincipal(String.format("%s@%s", userName, realm), KerberosPrincipal.KRB_NT_PRINCIPAL);
        return getInitiatorSubject(principal, password, expire);
    }