return this;
    }

    public void addArtifact(Artifact artifact) {
        if (artifacts == null) {
            artifacts = new LinkedHashSet<>();
        }

        artifacts.add(artifact);
    }

    public Set<Artifact> getArtifacts() {
        if (artifacts == null) {
            artifacts = new LinkedHashSet<>();
        }

        return artifacts;
    }

    public void addArtifact(Artifact artifact) {
        if (artifacts == null) {
            artifacts = new LinkedHashSet<>();
        }

        artifacts.add(artifact);
    }

    public Set<Artifact> getArtifacts() {
        return artifacts;
    }

    public void addRequestedArtifact(Artifact artifact) {
        if (requestedArtifacts == null) {
            requestedArtifacts = new LinkedHashSet<>();
        }

     *
     * @param arrays
     *            the array
     * @return {@literal true} if the array is {@literal null} or has a length of 0
     */
    public static boolean isEmpty(final boolean[] arrays) {
        return arrays == null || arrays.length == 0;
    }

    /**
     * Returns {@literal true} if the array is not {@literal null} and its length is not 0.

        NegTokenInit p4 = new NegTokenInit(tokenTag4);
        assertArrayEquals(mic, p4.getMechanismListMIC(), "MIC should be parsed from tag [4]");

        // Tag [3]
        byte[] tokenTag3 = buildInitToken(new ASN1ObjectIdentifier[] { OID_KRB }, null, null, mic, false, null, null, null);
        NegTokenInit p3 = new NegTokenInit(tokenTag3);

     */
    public SecureCredentialStorage(char[] masterPassword, byte[] salt) throws GeneralSecurityException {
        if (masterPassword == null || masterPassword.length == 0) {
            throw new IllegalArgumentException("Master password cannot be null or empty");
        }
        if (salt == null || salt.length != SALT_SIZE) {
            throw new IllegalArgumentException("Invalid salt");
        }

        this.salt = salt.clone();

    }

    // Confirms constructor handles null by producing an empty buffer
    @Test
    @DisplayName("Constructor with null sets empty buffer")
    void constructor_withNull_setsEmpty() {
        // Arrange & Act
        SecurityBlob blob = new SecurityBlob(null);

        // Assert
        assertNotNull(blob.get(), "Internal array should be non-null");

    private final boolean lowerBoundInclusive;

    private final ArtifactVersion upperBound;

    private final boolean upperBoundInclusive;

    public static final Restriction EVERYTHING = new Restriction(null, false, null, false);

    public Restriction(
            ArtifactVersion lowerBound,
            boolean lowerBoundInclusive,
            ArtifactVersion upperBound,
            boolean upperBoundInclusive) {

        if (accessType != null) {
            addFieldToSource(sourceMap, "accessType", accessType);
        }
        if (clientIp != null) {
            addFieldToSource(sourceMap, "clientIp", clientIp);
        }
        if (hitCount != null) {
            addFieldToSource(sourceMap, "hitCount", hitCount);
        }
        if (hitCountRelation != null) {

    protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }

    protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }