private final boolean realLocalRepo;

    public static RepositorySystemSession overlay(
            ArtifactRepository repository, RepositorySystemSession session, RepositorySystem system) {
        return overlay(repository, session);
    }

    public static RepositorySystemSession overlay(ArtifactRepository repository, RepositorySystemSession session) {

 * </p>
 * <strong>NOTE:</strong> This class is not part of any public api and can be changed or deleted without prior notice.
 *
 * @since 3.0
 */
// TODO Kristian wonders if this class really is necessary and if it overlaps other concepts.
public final class ProjectIndex {

    private final Map<String, MavenProject> projects;

    private final Map<String, Integer> indices;

    public ProjectIndex(List<MavenProject> projects) {

                    ArtifactVersion lower;
                    ArtifactVersion upper;
                    boolean lowerInclusive;
                    boolean upperInclusive;

                    // overlaps
                    if (res1.getLowerBound() == null) {
                        lower = res2.getLowerBound();
                        lowerInclusive = res2.isLowerBoundInclusive();

        BuildSession(ProjectBuildingRequest request, boolean localProjects) {
            this.request = request;
            this.session =
                    RepositoryUtils.overlay(request.getLocalRepository(), request.getRepositorySession(), repoSystem);
            InternalSession.from(session);
            this.repositories = RepositoryUtils.toRepos(request.getRemoteRepositories());

        }
    }

    private RepositorySystemSession getSession(ArtifactRepository localRepository) {
        return LegacyLocalRepositoryManager.overlay(localRepository, legacySupport.getRepositorySession(), null);
    }

    private void injectSession1(RepositoryRequest request, MavenSession session) {
        if (session != null) {

        for (RemoteRepository repository : repositories) {
            result = 31 * result + repositoryHashCode(repository);
        }
        return result;
    }

    public static RepositorySystemSession overlay(
            ArtifactRepository repository, RepositorySystemSession session, RepositorySystem system) {
        if (repository == null || repository.getBasedir() == null) {
            return session;
        }

    public void install(File source, Artifact artifact, ArtifactRepository localRepository)
            throws ArtifactInstallationException {
        RepositorySystemSession session =
                LegacyLocalRepositoryManager.overlay(localRepository, legacySupport.getRepositorySession(), repoSystem);

        InstallRequest request = new InstallRequest();

        request.setTrace(RequestTrace.newChild(null, legacySupport.getSession().getCurrentProject()));

            throws ArtifactDeploymentException {
        RepositorySystemSession session =
                LegacyLocalRepositoryManager.overlay(localRepository, legacySupport.getRepositorySession(), repoSystem);

        DeployRequest request = new DeployRequest();

        request.setTrace(RequestTrace.newChild(null, legacySupport.getSession().getCurrentProject()));