* @throws IOException java.io.IOException if any.
     */
    public void write(Writer writer, Settings settings) throws IOException {
        try {
            delegate.write(writer, settings.getDelegate());
        } catch (XMLStreamException e) {
            throw new IOException(e);
        }
    }

    /**
     * Method write.
     *
     * @param stream a stream object.

                }
            }
        });

        ModelBuildingResult result = builder.build(request);
        Dependency dep = result.getEffectiveModel().getDelegate().getDependencyManagement().getDependencies().stream()
                .filter(d -> "test:mydep:jar".equals(d.getManagementKey()))
                .findFirst()
                .get();

        addRepository(repository.getDelegate());
    }

    @Override
    public void addRepository(org.apache.maven.model.Repository repository, boolean replace)
            throws InvalidRepositoryException {
        addRepository(repository.getDelegate(), replace);
    }

        model.update(mergeDuplicates(model.getDelegate(), request, problems));
    }

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

    @Override

            org.apache.maven.model.Profile profile,
            ModelBuildingRequest request,
            ModelProblemCollector problems) {
        model.update(
                injectProfile(model.getDelegate(), profile != null ? profile.getDelegate() : null, request, problems));
    }

    @Override
    public Model injectProfile(
            Model model, Profile profile, ModelBuildingRequest request, ModelProblemCollector problems) {

    }

    @Override
    public Model build(RepositorySystemSession session, MavenProject project, Path src) throws ModelBuilderException {
        Model model = project.getModel().getDelegate();
        String packaging = model.getPackaging();
        String originalPackaging = project.getOriginalModel().getPackaging();
        if (POM_PACKAGING.equals(packaging) && !BOM_PACKAGING.equals(originalPackaging)) {

                            original.getId(),
                            lifecycle.getId());
                }
            }
            if (lifecycle.getDelegate() != null) {
                for (org.apache.maven.api.Lifecycle.Alias alias :
                        lifecycle.getDelegate().aliases()) {
                    Lifecycle original = phaseToLifecycleMap.put(alias.v3Phase(), lifecycle);

    }

    public BaseObject(Object delegate, ChildrenTracking parent) {
        this.delegate = requireNonNull(delegate, "delegate cannot be null");
        this.childrenTracking = parent;
    }

    public Object getDelegate() {
        return delegate;
    }

    public void update(Object newDelegate) {
        if (delegate != newDelegate) {
            if (childrenTracking != null) {

    }

    public BaseObject(Object delegate, ChildrenTracking parent) {
        this.delegate = requireNonNull(delegate, "delegate cannot be null");
        this.childrenTracking = parent;
    }

    public Object getDelegate() {
        return delegate;
    }

    public void update(Object newDelegate) {
        if (delegate != newDelegate) {
            if (childrenTracking != null) {

                .servers(request.getServers().stream().map(Server::getDelegate).collect(Collectors.toList()))
                .mirrors(request.getMirrors().stream().map(Mirror::getDelegate).collect(Collectors.toList()))
                .profiles(request.getProfiles().stream()
                        .map(Profile::getDelegate)