if (repositories != null && session != null) {
            for (ArtifactRepository repository : repositories) {
                repository.setAuthentication(getAuthentication(session, repository));
            }
        }
    }

    private Proxy getProxy(RepositorySystemSession session, ArtifactRepository repository) {

                resource.setContentLength(size - 1);

                DefaultRepositorySystemSession session =
                        new DefaultRepositorySystemSession(h -> false); // no close handle

                // warm up
                test(listener, session, resource, 0);

                for (int i = 1; i < size; i++) {
                    final int bytes = i;

        return (ValidationReportLevel) session.getData()
                .computeIfAbsent(ValidationReportLevel.class, () -> parseValidationReportLevel(session));
    }

    private ValidationReportLevel parseValidationReportLevel(RepositorySystemSession session) {
        String level = ConfigUtils.getString(session, null, Constants.MAVEN_PLUGIN_VALIDATION);

     */
    boolean isInUse();

    /**
     * Returns the current session key used for signing and encryption.
     *
     * @return the current session key
     * @throws CIFSException if the session key cannot be retrieved
     */
    byte[] getSessionKey() throws CIFSException;

    /**
     * Returns the SMB transport associated with this session.
     *
     * @return the transport for this session
     */

            TransferEvent transferInitiatedEvent = event(session, resource, TransferEvent.EventType.INITIATED);
            TransferEvent transferStartedEvent = event(session, resource, TransferEvent.EventType.STARTED);
            TransferEvent transferProgressedEvent = event(session, resource, TransferEvent.EventType.PROGRESSED);
            TransferEvent transferSucceededEvent = event(session, resource, TransferEvent.EventType.SUCCEEDED);

                .setLocalRepository(session.getLocalRepository())
                .setOffline(session.isOffline())
                .setForceUpdate(session.getRequest().isUpdateSnapshots());
        request.setServers(session.getRequest().getServers());
        request.setMirrors(session.getRequest().getMirrors());
        request.setProxies(session.getRequest().getProxies());

        DefaultRepositorySystemSession session = new DefaultRepositorySystemSession(h -> false); // no close handle
        MavenSessionBuilderSupplier builder = new MavenSessionBuilderSupplier();
        session.setDependencyTraverser(builder.getDependencyTraverser());
        session.setDependencyManager(new ClassicDependencyManager()); // Maven 3 behavior
        session.setDependencySelector(builder.getDependencySelector());

     * @throws SettingsBuilderException if the effective settings could not be built
     */
    @Nonnull
    default SettingsBuilderResult build(
            @Nonnull Session session, @Nonnull Source installationSettingsSource, @Nonnull Source userSettingsSource) {
        return build(session, installationSettingsSource, null, userSettingsSource);
    }

    /**
     * Builds the effective settings of the specified settings paths.
     *

     *            null}.
     * @param session The repository session to use for resolving the plugin's main artifact, must not be {@code null}.
     * @return The plugin descriptor, never {@code null}.
     */
    PluginDescriptor getPluginDescriptor(
            Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session)

        @Override
        public void afterSessionStart(MavenSession session) {
            session.getUserProperties().setProperty("injected", "bar");
        }
    }

    public static class InjectReactorDependency extends AbstractMavenLifecycleParticipant {
        @Override
        public void afterProjectsRead(MavenSession session) {
            injectReactorDependency(session.getProjects(), "module-a", "module-b");
        }