assertFalse(parsed.getContextFlag(NegTokenInit.CONFIDENTIALITY));
    }

    @Test
    @DisplayName("Minimal token: no fields present")
    void testMinimalTokenRoundTrip() throws Exception {
        NegTokenInit init = new NegTokenInit(); // no fields
        byte[] bytes = init.toByteArray();

        NegTokenInit parsed = new NegTokenInit(bytes);