copy.setRemoteRepositories(original.getRemoteRepositories());
        copy.setPluginArtifactRepositories(original.getPluginArtifactRepositories());
        copy.setRepositoryCache(original.getRepositoryCache());
        copy.setWorkspaceReader(original.getWorkspaceReader());
        copy.setNoSnapshotUpdates(original.isNoSnapshotUpdates());
        copy.setExecutionListener(original.getExecutionListener());

        SessionBuilder sessionBuilder = supplier.get();
        sessionBuilder.setArtifactTypeRegistry(new TypeRegistryAdapter(typeRegistry)); // dynamic
        sessionBuilder.setCache(request.getRepositoryCache());

        // configProps map is kept "pristine", is written ONLY, the mandatory resolver config
        Map<String, Object> configProps = new LinkedHashMap<>();

    List<ArtifactRepository> getPluginArtifactRepositories();

    MavenExecutionRequest setRepositoryCache(RepositoryCache repositoryCache);

    RepositoryCache getRepositoryCache();

    WorkspaceReader getWorkspaceReader();

    MavenExecutionRequest setWorkspaceReader(WorkspaceReader workspaceReader);

    File getUserToolchainsFile();

    @Deprecated
    //
    // Used by Tycho and will break users and force them to upgrade to Maven 3.1 so we should really leave
    // this here, possibly indefinitely.
    //
    public RepositoryCache getRepositoryCache() {
        return null;
    }

    @Deprecated
    public EventDispatcher getEventDispatcher() {
        return null;
    }

    @Deprecated