}

        return null;
    }

    @Override
    public List<String> findVersions(Artifact artifact) {
        List<String> versions = getProjects()
                .getOrDefault(artifact.getGroupId(), Collections.emptyMap())
                .getOrDefault(artifact.getArtifactId(), Collections.emptyMap())
                .values()
                .stream()
                .map(MavenProject::getVersion)

    }

    private CoreExtensionEntry createExtension(CoreExtension extension, List<Artifact> artifacts) throws Exception {
        String realmId = "coreExtension>" + extension.getGroupId() + ":" + extension.getArtifactId() + ":"
                + extension.getVersion();
        final ClassRealm realm = classWorld.newRealm(realmId, null);
        Set<String> providedArtifacts = Collections.emptySet();

        requireNonNull(path, "path cannot be null");
        if (artifact.getGroupId().isEmpty()
                || artifact.getArtifactId().isEmpty()
                || artifact.getBaseVersion().toString().isEmpty()) {
            artifact = session.createProducedArtifact(
                    artifact.getGroupId().isEmpty() ? project.getGroupId() : artifact.getGroupId(),

        return repository.getId();
    }

    private String getPath(Metadata metadata, String repositoryKey) {
        StringBuilder path = new StringBuilder(128);

        if (!metadata.getGroupId().isEmpty()) {
            path.append(metadata.getGroupId().replace('.', '/')).append('/');

            if (!metadata.getArtifactId().isEmpty()) {
                path.append(metadata.getArtifactId()).append('/');

    }

    private CoreExtensionEntry createExtension(CoreExtension extension, List<Artifact> artifacts) throws Exception {
        String realmId = "coreExtension>" + extension.getGroupId() + ":" + extension.getArtifactId() + ":"
                + extension.getVersion();
        final ClassRealm realm = classWorld.newRealm(realmId, null);
        Set<String> providedArtifacts = Collections.emptySet();

        return "maven-site-plugin".equals(plugin.getArtifactId())
                && "org.apache.maven.plugins".equals(plugin.getGroupId());
    }

    private Xpp3Dom convert(ReportPlugin plugin) {
        Xpp3Dom dom = new Xpp3Dom("reportPlugin", plugin.getLocation(""));

        addDom(dom, "groupId", plugin.getGroupId(), plugin.getLocation("groupId"));
        addDom(dom, "artifactId", plugin.getArtifactId(), plugin.getLocation("artifactId"));

         * plugins only check for null, so be sure to nullify an empty classifier.
         */
        org.apache.maven.artifact.Artifact result = new org.apache.maven.artifact.DefaultArtifact(
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion(),
                null,
                artifact.getProperty(ArtifactProperties.TYPE, artifact.getExtension()),

     */
    static boolean isInScope(Artifact artifact, Artifact nodeArtifact) {
        return Objects.equals(artifact.getGroupId(), nodeArtifact.getGroupId())
                && Objects.equals(artifact.getArtifactId(), nodeArtifact.getArtifactId())
                && Objects.equals(artifact.getVersion(), nodeArtifact.getVersion());
    }

        super(message, artifact, remoteRepositories);
    }

    public ArtifactNotFoundException(String message, Artifact artifact) {
        this(
                message,
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion(),
                artifact.getType(),
                artifact.getClassifier(),
                null,

            Metadata metadata = it.next();
            if (metadata instanceof PluginsMetadata pluginsMetadata) {
                it.remove();
                processedPlugins.put(pluginsMetadata.getGroupId(), pluginsMetadata);
            }
        }
    }

    @Override
    public Collection<? extends Metadata> prepare(Collection<? extends Artifact> artifacts) {
        return Collections.emptyList();
    }