}

    public void merge(ArtifactRepositoryPolicy policy) {
        if (policy != null && policy.isEnabled()) {
            setEnabled(true);

            if (ordinalOfCksumPolicy(policy.getChecksumPolicy()) < ordinalOfCksumPolicy(getChecksumPolicy())) {
                setChecksumPolicy(policy.getChecksumPolicy());
            }

            if (token.startsWith("[")) {
                ranges.add(new RangeValue(token.replace("[", ""), true));
            } else if (token.startsWith("(")) {
                ranges.add(new RangeValue(token.replace("(", ""), false));
            } else if (token.endsWith("]")) {
                ranges.add(new RangeValue(token.replace("]", ""), true));
            } else if (token.endsWith(")")) {

            boolean isBlankVersion = descriptor.getRequiredMavenVersion() == null
                    || descriptor.getRequiredMavenVersion().trim().isEmpty();

            if (isBlankVersion) {
                // only take value from underlying POM if plugin descriptor has no explicit Maven requirement
                descriptor.setRequiredMavenVersion(artifact.getProperty("requiredMavenVersion", null));
            }

        public boolean isStale() {
            File pomFile = pomArtifact.getFile();
            if (pomFile != null) {
                if (pomFile.canRead()) {
                    return length != pomFile.length() || timestamp != pomFile.lastModified();
                } else {
                    // if the POM didn't exist, retry if any repo is configured to always update
                    boolean snapshot = pomArtifact.isSnapshot();

    }

    public boolean include(Artifact artifact) {
        if (Artifact.SCOPE_COMPILE.equals(artifact.getScope())) {
            return compileScope;
        } else if (Artifact.SCOPE_RUNTIME.equals(artifact.getScope())) {
            return runtimeScope;
        } else if (Artifact.SCOPE_TEST.equals(artifact.getScope())) {
            return testScope;
        } else if (Artifact.SCOPE_PROVIDED.equals(artifact.getScope())) {

        Collection<String> scopes = Collections.emptyList();

        if (classpath != null && !classpath.isEmpty()) {
            if (Artifact.SCOPE_COMPILE.equals(classpath)) {
                scopes = Arrays.asList(Artifact.SCOPE_COMPILE, Artifact.SCOPE_SYSTEM, Artifact.SCOPE_PROVIDED);
            } else if (Artifact.SCOPE_RUNTIME.equals(classpath)) {

        if (active && os.getFamily() != null) {
            active = determineFamilyMatch(os.getFamily(), actualOsName);
        }
        if (active && os.getName() != null) {
            active = determineNameMatch(os.getName(), actualOsName);
        }
        if (active && os.getArch() != null) {
            active = determineArchMatch(os.getArch(), actualOsArch);

        int lastHyphen = version.lastIndexOf('-');
        if (lastHyphen > 0) {
            int prevHyphen = version.lastIndexOf('-', lastHyphen - 1);
            if (prevHyphen > 0) {
                Matcher m = Artifact.VERSION_FILE_PATTERN.matcher(version);
                if (m.matches()) {
                    return m.group(1) + "-" + Artifact.SNAPSHOT_VERSION;
                }

        public int compareTo(Version o) {
            if (o instanceof DefaultVersion) {
                return delegate.compareTo(((DefaultVersion) o).delegate);
            } else {
                return compareTo(new DefaultVersion(versionScheme, o.asString()));
            }
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) {
                return true;
            }

        }
        RecursionInterceptor recursionInterceptor = createRecursionInterceptor(request);
        return value -> {
            if (value != null && value.contains("${")) {
                String c = cache.get(value);
                if (c == null) {
                    try {
                        c = interpolator.interpolate(value, recursionInterceptor);