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());

            Artifact pomArtifact = ArtifactDescriptorUtils.toPomArtifactUnconditionally(a);
            try {
                VersionRequest versionRequest =
                        new VersionRequest(a, request.getRepositories(), request.getRequestContext());
                versionRequest.setTrace(trace);
                VersionResult versionResult = versionResolver.resolveVersion(session, versionRequest);

        try {
            List<ArtifactRepository> repositories = session.toArtifactRepositories(
                    request.getRepositories() != null ? request.getRepositories() : session.getRemoteRepositories());
            ProjectBuildingRequest req = new DefaultProjectBuildingRequest()
                    .setRepositorySession(session.getSession())

        //   </mirror>
        // </mirrors>

        for (Mirror mirror : settings.getMirrors()) {
            request.addMirror(mirror);
        }

        for (Repository remoteRepository : settings.getRepositories()) {
            try {
                request.addRemoteRepository(MavenRepositorySystem.buildArtifactRepository(remoteRepository));
            } catch (InvalidRepositoryException e) {