if (!parent.getVersion().equals(newVersion)) {
                modified.set(parent.withVersion(newVersion));
            }

            return resolveModel(parent.getGroupId(), parent.getArtifactId(), newVersion);
        } catch (final VersionRangeResolutionException e) {
            throw new UnresolvableModelException(
                    e.getMessage(), parent.getGroupId(), parent.getArtifactId(), parent.getVersion(), e);

        }

        @Override
        public Object[] toArray() {
            return parent.toArray();
        }

        @Override
        public <T> T[] toArray(final T[] a) {
            return parent.toArray(a);
        }

        @Override
        public boolean add(final E e) {
            return parent.add(e);
        }

        @Override

        builder = Model.newBuilder(model);
        modelMerger.mergeModel_ModelVersion(builder, model, parent, false, null);
        assertEquals("5.0.0", builder.build().getModelVersion());
    }

    // ArtifactId is neither inherited nor injected
    @Test
    void testMergeModel_ArtifactId() {
        Model parent = Model.newBuilder().artifactId("PARENT").build();
        Model model = Model.newInstance();

    public void renderTo(ClassDoc classDoc, Element parent) {
        Document document = parent.getOwnerDocument();

        Element title = document.createElement("title");
        parent.appendChild(title);
        title.appendChild(document.createTextNode(classDoc.getSimpleName()));

        addApiDocumentationLink(classDoc, parent, document);
        addSubtypeLinks(classDoc, parent, document);

        MavenProject project = getMavenProject(artifactId);
        Parent parent = new Parent();
        parent.setGroupId(parentProject.getGroupId());
        parent.setArtifactId(parentProject.getArtifactId());
        project.getModel().setParent(parent);
        return project;
    }

    private MavenProject getMavenProject(String artifactId) {

                parent.isOptional());

        setDependencyTrail(Collections.singletonList(parent.getId()));

        this.parent = parent;

        if (getId().equals(parent.getId())) {
            throw new InvalidArtifactRTException(
                    parent.getGroupId(),
                    parent.getArtifactId(),
                    parent.getVersion(),
                    parent.getType(),

    private static final String LANG_KEY = "lang";
    private final Map<String, Object> parent;

    public DocMap(final Map<String, Object> parent) {
        this.parent = parent;
    }

    @Override
    public int size() {
        return parent.size();
    }

    @Override
    public boolean isEmpty() {
        return parent.isEmpty();
    }

    @Override
    public boolean containsKey(final Object key) {

    }

    @Override
    public void renderSummaryTo(ClassDoc classDoc, Element parent) {
        Document document = parent.getOwnerDocument();

        Element summarySection = document.createElement("section");
        parent.appendChild(summarySection);

        Element title = document.createElement("title");
        summarySection.appendChild(title);

        MetadataTreeNode parent = null;

        for (ArtifactMetadata md : classpath) {
            MetadataTreeNode node = new MetadataTreeNode(md, parent, md.isResolved(), md.getArtifactScope());
            if (tree == null) {
                tree = node;
            }

            if (parent != null) {
                parent.setNChildren(1);
                parent.addChild(0, node);
            }

                        dependency.getVersion(),
                        false,
                        false);
            }

            Parent parent = project.getModel().getDelegate().getParent();

            if (parent != null) {
                // Parent is added as an edge, but must not cause a cycle - so we remove any other edges it has
                // in conflict
                addEdge(