assertEquals(NegTokenTarg.UNSPECIFIED_RESULT, nt.getResult(), "new object should have UNSPECIFIED_RESULT");
    }

    @Test
    @DisplayName("serialization omits tags when field is null")
    void testSerializationOmittingNullFields() throws IOException {
        NegTokenTarg token = new NegTokenTarg();
        token.setResult(NegTokenTarg.ACCEPT_INCOMPLETE);
        // mechanism, token and mic are left null