printErrors(result);

        Iterator<Artifact> i = result.getArtifacts().iterator();
        assertEquals(n, i.next(), "n should be first");
        assertEquals(m, i.next(), "m should be second");

        // inverse order
        set = new LinkedHashSet<>();
        set.add(m);
        set.add(n);

        result = artifactResolver.resolveTransitively(

         * into a repository. In the first case, the result needs to be a proper local repository that one can use for
         * local artifact resolution. In the second case, the result needs to precisely obey the path information of the
         * repository's layout to allow pointing at artifacts within the repository. Unfortunately,

 * key. Since this is a default component this will be a plain binding of ModelProcessor to
 * this implementation type, ie. no hint/name.
 *
 * This leads to a second side effect in that any @Inject request for just ModelProcessor in
 * the same injector is immediately matched to this explicit binding, which means extensions

     * project. In spite of the 'throws' declaration on this API, this method has never thrown an exception since Maven
     * 3.0.x. Historically, it logged and ignored a second addition of the same g/a/v/c/t. Now it replaces the file for
     * the artifact, so that plugins (e.g. shade) can change the pathname of the file for a particular set of
     * coordinates.
     *

     *
     * @param first the first version.
     * @param second the second version.
     * @return negative if the first version is newer than the second version, zero if they are the same or positive if
     * the second version is the newer.
     */
    private static int compareModelVersions(String first, String second) {
        // we use a dedicated comparator because we control our model version scheme.

import org.apache.maven.api.services.ModelProblemCollector;
import org.apache.maven.api.services.model.ModelBuildingEvent;

/**
 * Holds data relevant for a model building event.
 */
record DefaultModelBuildingEvent(
        Model model, Consumer<Model> update, ModelBuilderRequest request, ModelProblemCollector problems)

        }

        CacheRecord record = new CacheRecord(artifacts);
        cache.put(key, record);
        return record;
    }

    @Override
    public CacheRecord put(Key key, LifecycleExecutionException exception) {
        Objects.requireNonNull(exception, "exception cannot be null");
        assertUniqueKey(key);
        CacheRecord record = new CacheRecord(exception);
        cache.put(key, record);

 * processing by providing a means to transport information that cannot be (easily) extracted from the model itself.
 */
record ModelData(ModelSource source, Model model) {

    /**
     * Gets unique identifier of the model
     *
     * @return The effective identifier of the model, never {@code null}.
     */
    public String id() {

        if (threads <= 1) {
            executor = Runnable::run;
        } else {
            executor = new ThreadPoolExecutor(
                    threads, threads, 3, TimeUnit.SECONDS, new LinkedBlockingQueue<>(), new DaemonThreadCreator());
        }
    }

    private RepositorySystemSession getSession(ArtifactRepository localRepository) {

            throw new UnresolvableModelException(e.getMessage(), groupId, artifactId, version, e);
        }

        return new ArtifactModelSource(pomArtifact.getFile(), groupId, artifactId, version);
    }

    record Result(ModelSource source, Parent parent, Exception e) {}

    @Override
    public ModelSource resolveModel(final Parent parent, AtomicReference<Parent> modified)
            throws UnresolvableModelException {