RemoteRepository r = (RemoteRepository) result.getRepository();
                        subRequest.setRepositories(Collections.singletonList(r));
                    } else {
                        subRequest.setRepositories(request.getRepositories());
                    }
                    VersionResult subResult = resolveVersion(session, subRequest);

        Model target = new Model();
        target.setRepositories( Arrays.asList( repository ) );

        Model source = new Model();
        source.setRepositories( Arrays.asList( repository ) );

        modelMerger.merge( target, source, true, null );

        assertThat( target.getRepositories(), contains( repository ) );
    }

    @Test
    public void mergeSameRoles()

    public List<ArtifactRepository> getRepositories() {
        if (repositories == null) {
            return Collections.emptyList();
        }

        return Collections.unmodifiableList(repositories);
    }

    public MetadataResolutionResult setRepositories(final List<ArtifactRepository> repositories) {
        this.repositories = repositories;

    public List<ArtifactRepository> getRepositories() {
        if (repositories == null) {
            return Collections.emptyList();
        }

        return Collections.unmodifiableList(repositories);
    }

    public ArtifactResolutionResult setRepositories(final List<ArtifactRepository> repositories) {
        this.repositories = repositories;

            try {
                ArtifactRequest artifactRequest = new ArtifactRequest();
                artifactRequest.setArtifact(RepositoryUtils.toArtifact(artifact));
                artifactRequest.setRepositories(RepositoryUtils.toRepos(remoteRepositories));

                // Maven 2.x quirk: an artifact always points at the local repo, regardless whether resolved or not

                if (artifactRequest != null && artifactRequest.getRepositories() != null) {
                    repositories.addAll(artifactRequest.getRepositories());
                } else if (artifactDescriptorRequest != null && artifactDescriptorRequest.getRepositories() != null) {
                    repositories.addAll(artifactDescriptorRequest.getRepositories());
                }
                if (!repositories.isEmpty()) {

        List<MetadataRequest> metadataRequests =
                new ArrayList<>(request.getRepositories().size());

        metadataRequests.add(new MetadataRequest(metadata, null, request.getRequestContext()));

        for (RemoteRepository repository : request.getRepositories()) {
            MetadataRequest metadataRequest = new MetadataRequest(metadata, repository, request.getRequestContext());

@Experimental
public interface VersionRangeResolverRequest {

    @Nonnull
    Session getSession();

    @Nonnull
    ArtifactCoordinates getArtifactCoordinates();

    @Nullable
    List<RemoteRepository> getRepositories();

    @Nonnull
    static VersionRangeResolverRequest build(
            @Nonnull Session session, @Nonnull ArtifactCoordinates artifactCoordinates) {
        return build(session, artifactCoordinates, null);
    }

@Experimental
public interface VersionResolverRequest {

    @Nonnull
    Session getSession();

    @Nonnull
    ArtifactCoordinates getArtifactCoordinates();

    @Nullable
    List<RemoteRepository> getRepositories();

    @Nonnull
    static VersionResolverRequest build(@Nonnull Session session, @Nonnull ArtifactCoordinates artifactCoordinates) {
        return builder()

@Immutable
public interface ArtifactResolverRequest {
    @Nonnull
    Session getSession();

    @Nonnull
    Collection<? extends ArtifactCoordinates> getCoordinates();

    @Nonnull
    List<RemoteRepository> getRepositories();

    @Nonnull
    static ArtifactResolverRequestBuilder builder() {
        return new ArtifactResolverRequestBuilder();
    }

    @Nonnull
    static ArtifactResolverRequest build(