byte[] mic = new byte[] { 7, 8, 9, 10 };
        t.setMechanismListMIC(mic);
        assertArrayEquals(mic, t.getMechanismListMIC(), "mechanismListMIC should round-trip");

        // Document current behavior: no defensive copy (reference exposed)
        mic[1] = 42;
        assertEquals(42, t.getMechanismListMIC()[1], "no defensive copy; reflects external mutation");
    }

    @Test

        assertEquals(mech, roundTrip.getMechanism(), "mechanism should roundtrip");
        assertArrayEquals(tokenArray, roundTrip.getMechanismToken(), "mechanism token should roundtrip");
        assertArrayEquals(mic, roundTrip.getMechanismListMIC(), "mic should roundtrip");
    }

    @Test
    @DisplayName("default constructor – unspecified result")
    void testDefaultResult() {
        NegTokenTarg nt = new NegTokenTarg();

    }

    /**
     * Gets the mechanism list MIC (Message Integrity Code) for integrity protection
     * @return the mechanism list MIC bytes
     */
    public byte[] getMechanismListMIC() {
        return this.mechanismListMIC;
    }

    /**
     * Sets the mechanism list MIC (Message Integrity Code) for integrity protection
     * @param mechanismListMIC the mechanism list MIC bytes
     */

            if (mechanismToken != null) {
                fields.add(new DERTaggedObject(true, 2, new DEROctetString(mechanismToken)));
            }
            final byte[] mechanismListMIC = getMechanismListMIC();
            if (mechanismListMIC != null) {
                fields.add(new DERTaggedObject(true, 3, new DEROctetString(mechanismListMIC)));
            }