try {
            Files.createDirectories(metadataPath.getParent());
            try (OutputStream output = Files.newOutputStream(metadataPath)) {
                new MetadataStaxWriter().write(output, metadata.getDelegate());
            }
        } catch (IOException | XMLStreamException e) {
            throw new RepositoryException("Could not write metadata " + metadataPath + ": " + e.getMessage(), e);
        }
    }

        return repositories == null ? null : map(repositories, this::toArtifactRepository);
    }

    @Nonnull
    @Override
    public Settings getSettings() {
        return getMavenSession().getSettings().getDelegate();
    }

    @Nonnull
    @Override
    public Map<String, String> getUserProperties() {
        return Collections.unmodifiableMap(new PropertiesAsMap(getMavenSession().getUserProperties()));
    }

            ModelProblemCollector problems) {
        return getActiveProfiles(profiles.stream().map(Profile::new).collect(Collectors.toList()), context, problems)
                .stream()
                .map(Profile::getDelegate)
                .collect(Collectors.toList());
    }

            ModelProblemCollector problems) {
        Model m = new Model(model);
        injectProfile(m, profile != null ? new Profile(profile) : null, request, problems);
        return m.getDelegate();
    }

    /**
     * Merges values from the specified profile into the given model. Implementations are expected to keep the profile

    @Override
    public void injectManagement(
            org.apache.maven.model.Model model, ModelBuildingRequest request, ModelProblemCollector problems) {
        model.update(merger.mergeManagedDependencies(model.getDelegate()));
    }

    /**
     * ManagementModelMerger
     */
    protected static class ManagementModelMerger extends MavenModelMerger {

        public Model mergeManagedDependencies(Model model) {

  @RetainedWith
  transient AbstractBiMap<V, K> inverse;

  /** Package-private constructor for creating a map-backed bimap. */
  AbstractBiMap(Map<K, V> forward, Map<V, K> backward) {
    setDelegates(forward, backward);
  }

  /** Private constructor for inverse bimap. */
  private AbstractBiMap(Map<K, V> backward, AbstractBiMap<V, K> forward) {
    delegate = backward;
    inverse = forward;
  }

    @Override
    public void injectManagement(
            org.apache.maven.model.Model model, ModelBuildingRequest request, ModelProblemCollector problems) {
        model.update(merger.mergeManagedBuildPlugins(model.getDelegate()));
    }

    /**
     * ManagementModelMerger
     */
    protected static class ManagementModelMerger extends MavenModelMerger {

        public Model mergeManagedBuildPlugins(Model model) {

        for (MavenProject mavenProject : projects) {
            if (!"maven-plugin".equals(mavenProject.getPackaging())) {
                Prerequisites prerequisites =
                        mavenProject.getModel().getDelegate().getPrerequisites();
                if (prerequisites != null && prerequisites.getMaven() != null) {
                    logger.warn(
                            "The project {} uses prerequisites"

    @Nonnull
    @Override
    public Packaging getPackaging() {
        return packaging;
    }

    @Nonnull
    @Override
    public Model getModel() {
        return project.getModel().getDelegate();
    }

    @Nonnull
    @Override
    public Path getPomPath() {
        return nonNull(project.getFile(), "pomPath").toPath();
    }

    @Override
    public Path getBasedir() {

     */
    public java.nio.file.Path getPomPath() {
        return (getDelegate().getPomFile() != null) ? getDelegate().getPomFile() : null;
    }

    public void setPomPath(java.nio.file.Path pomPath) {
        update( getDelegate().withPomFile(pomPath));
    }

    public void setModelEncoding(String modelEncoding) {
        update(getDelegate().with().modelEncoding(modelEncoding).build());
    }

    /**