*/
    @Nonnull
    default ModelSource resolveModel(
            @Nonnull Session session, @Nonnull Parent parent, @Nonnull AtomicReference<Parent> modified)
            throws ModelResolverException {
        return resolveModel(
                session,
                parent.getGroupId(),
                parent.getArtifactId(),

        parent.setArtifactId("apache");
        parent.setVersion("0");

        UnresolvableModelException e = assertThrows(
                UnresolvableModelException.class,
                () -> newModelResolver().resolveModel(parent.getDelegate(), new AtomicReference<>()),
                "Expected 'UnresolvableModelException' not thrown.");
        assertNotNull(e.getMessage());

                .version("0")
                .build();

        ModelResolverException e = assertThrows(
                ModelResolverException.class,
                () -> newModelResolver().resolveModel(session, parent, new AtomicReference<>()),
                "Expected 'ModelResolverException' not thrown.");
        assertNotNull(e.getMessage());

            }

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

    @Override

        protected abstract org.apache.maven.model.resolution.ModelResolver getResolver(
                List<RemoteRepository> repositories);

        @Override
        public ModelSource resolveModel(
                Session session, String groupId, String artifactId, String version, Consumer<String> resolved)
                throws ModelResolverException {
            try {

 *
 * @see DefaultArtifactDescriptorReader
 */
@Named
@Singleton
public class DefaultModelResolver implements ModelResolver {

    @Override
    public ModelSource resolveModel(
            Session session, String groupId, String artifactId, String version, Consumer<String> resolvedVersion)
            throws ModelResolverException {
        try {

            Session session = request.getSession()
                    .withRemoteRepositories(request.getModelRepositoryHolder().getRepositories());
            modelSource = modelResolver.resolveModel(session, parent, modified);
            if (modified.get() != null) {
                parent = modified.get();
            }
        } catch (ModelResolverException e) {