assertTrue(s.contains("000AFF"), "toString should include MIC hex");
    }

    @Test
    @DisplayName("Mechanism ordering is preserved after parse")
    void testMechanismOrderPreserved() throws Exception {
        ASN1ObjectIdentifier[] mechs = new ASN1ObjectIdentifier[] { OID_NTLM, OID_KRB, OID_KRB_LEGACY };
        NegTokenInit init = new NegTokenInit(mechs, 0, null, null);