assertEquals("https://parent.url/org", pom.getValue("organization/url"));
        assertEquals("https://parent.url/license.txt", pom.getValue("licenses[1]/url"));
        assertEquals("https://parent.url/viewvc/ap/child", pom.getValue("scm/url"));
        assertEquals("https://parent.url/scm/ap/child", pom.getValue("scm/connection"));

        nonNull(request, "request");
        Path path = request.getPath();
        URL url = request.getURL();
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (path == null && url == null && reader == null && inputStream == null) {
            throw new IllegalArgumentException("path, url, reader or inputStream must be non null");
        }
        try {

        String resource = "/org/apache/maven/model/pom-" + v + ".xml";
        URL url = getClass().getResource(resource);
        if (url == null) {
            throw new IllegalStateException("The super POM " + resource + " was not found"
                    + ", please verify the integrity of your Maven installation");
        }
        try (InputStream is = url.openStream()) {

        }
        try {
            for (Iterator<URL> it = classLoader
                            .getResources("META-INF/maven/org.apache.maven.api.di.Inject")
                            .asIterator();
                    it.hasNext(); ) {
                URL url = it.next();
                try (InputStream is = url.openStream()) {
                    String[] lines = new String(is.readAllBytes()).split("\n");

    static class UrlNormalizingPostProcessor implements InterpolationPostProcessor {

        private static final Set<String> URL_EXPRESSIONS;

        static {
            Set<String> expressions = new HashSet<>();
            expressions.add("project.url");
            expressions.add("project.scm.url");
            expressions.add("project.scm.connection");
            expressions.add("project.scm.developerConnection");

            url.append(parentUrl);
            concatPath(url, pathAdjustment);
            concatPath(url, childPath);

            return url.toString();
        }

        private void concatPath(StringBuilder url, String path) {
            if (!path.isEmpty()) {
                boolean initialUrlEndsWithSlash = url.charAt(url.length() - 1) == '/';

        for (int i = 0; i < licenses.size(); i++) {
            License license = licenses.get(i);
            properties.put("license." + i + ".name", license.getName());
            properties.put("license." + i + ".url", license.getUrl());
            properties.put("license." + i + ".comments", license.getComments());
            properties.put("license." + i + ".distribution", license.getDistribution());
        }

import org.apache.maven.api.model.Model;
import org.apache.maven.api.services.ModelBuilderRequest;

/**
 * Normalizes URLs to remove the ugly parent references "../" that got potentially inserted by URL adjustment during
 * model inheritance.
 *
 */
public interface ModelUrlNormalizer {

    /**
     * Normalizes the well-known URLs of the specified model.
     *

  private void run() {
    OkHttpClient client = new OkHttpClient.Builder()
        .readTimeout(0,  TimeUnit.MILLISECONDS)
        .build();

    Request request = new Request.Builder()
        .url("ws://echo.websocket.org")
        .build();
    client.newWebSocket(request, this);

    // Trigger shutdown of the dispatcher's executor so this process exits immediately.
    client.dispatcher().executorService().shutdown();

        if (model == null) {
            return null;
        }

        Model.Builder builder = Model.newBuilder(model);
        builder.url(normalize(model.getUrl()));

        Scm scm = model.getScm();
        if (scm != null) {
            builder.scm(Scm.newBuilder(scm)
                    .url(normalize(scm.getUrl()))
                    .connection(normalize(scm.getConnection()))