}

                root = root.toLowerCase();
                /*
                 * domain-based DFS root shares to links for each
                 */
                final Map<String, CacheEntry<DfsReferralDataInternal>> roots = domains.get(domain);
                if (roots != null) {
                    dr = getLinkReferral(tf, domain, root, path, now, roots);
                }

            if (roots != null) {
                SmbTransport trans = null;

                root = root.toLowerCase();

                /* The link entries contain maps of referrals by path representing DFS links.
                 * Note that paths are relative to the root like "\" and not "\example.com\root".
                 */
                CacheEntry links = (CacheEntry) roots.get(root);

        Element root = doc.root();

        // Insert elements with various text content scenarios
        DomUtils.insertContentElement(root, "name", "Test Project Name");
        DomUtils.insertContentElement(root, "description", ""); // Empty content
        DomUtils.insertContentElement(root, "url", null); // Null content
        DomUtils.insertContentElement(root, "inceptionYear", "2023");

        /**
         * @param root The root dependency
         * @return this request for chaining, never {@code null}
         */
        @Nonnull
        public DependencyResolverRequestBuilder root(@Nonnull DependencyCoordinates root) {
            this.root = root;
            return this;
        }

        /**

        void testGetRootCause() {
            Exception rootCause = new IllegalStateException("Test root cause");
            TransportException exception = new TransportException("Message", rootCause);

            assertEquals(rootCause, exception.getRootCause());
        }

        @Test
        @DisplayName("Should return null when no root cause")
        void testGetRootCauseWhenNull() {

        Element root = pomDocument.root();

        // Collect all repository containers to process
        Stream<Element> repositoryContainers = Stream.concat(
                // Root level repositories
                Stream.of(
                                root.child(REPOSITORIES).orElse(null),
                                root.child(PLUGIN_REPOSITORIES).orElse(null))

        Element root = pomDocument.root();

        // Check if this POM has a parent
        Element parentElement = root.child(PARENT).orElse(null);
        if (parentElement == null) {
            return false;
        }

        // Apply limited inference (child groupId/version removal only)
        return trimParentElementLimited(context, root, parentElement);
    }

    /**

            root.attribute("xsi:schemaLocation", newSchemaLocation);
            context.detail("Updated xsi:schemaLocation");
        }
    }

    /**
     * Converts modules to subprojects for 4.1.0 compatibility using domtrip.
     */
    private void convertModulesToSubprojects(Editor editor, UpgradeContext context) {
        Element root = editor.root();
        if (root == null) {
            return;

            // Verify the plugin version was upgraded
            Editor editor = new Editor(document);
            Element root = editor.root();
            String version = root.path("build", "plugins", "plugin", "version")
                    .map(Element::textContentTrimmed)
                    .orElse(null);

    /**
     * Returns an array of {@link Traverser} instances that handle collections of classes or resources based on the specified root package.
     *
     * @param rootPackage
     *            The root package.
     * @return An array of {@link Traverser} instances that handle collections of resources based on the specified root package.
     */
    public static Traverser[] getTraversers(final String rootPackage) {