}

    public ResolutionGroup retrieve(MetadataResolutionRequest request) throws ArtifactMetadataRetrievalException {
        return retrieve(request.getArtifact(), request.getLocalRepository(), request.getRemoteRepositories());
    }

        ResolutionNode root = new ResolutionNode(originatingArtifact, repositoryRequest.getRemoteRepositories());

        try {
            root.addDependencies(artifacts, repositoryRequest.getRemoteRepositories(), filter);
        } catch (CyclicDependencyException e) {
            result.addCircularDependencyException(e);

            return result;

                    request.getArtifact(),
                    toList(result.getArtifacts()),
                    result.getMissingArtifacts(),
                    request.getRemoteRepositories());
        }

        // this should never happen since we checked all possible error sources before but better be sure
        if (result.hasExceptions()) {
            throw new ArtifactResolutionException(

                    RepositoryUtils.overlay(request.getLocalRepository(), request.getRepositorySession(), repoSystem);
            InternalSession.from(session);
            this.repositories = RepositoryUtils.toRepos(request.getRemoteRepositories());
            this.executor = createExecutor(getParallelism(request));
            if (localProjects) {
                this.modelPool = new ReactorModelPool();

     */
    @Nonnull
    List<Node> getChildren();

    /**
     * @return repositories of this node
     */
    @Nonnull
    List<RemoteRepository> getRemoteRepositories();

    /**
     * The repository where this artifact has been downloaded from.
     */
    @Nonnull
    Optional<RemoteRepository> getRepository();

    /**

    ArtifactRepository getLocalRepository();

    ProjectBuildingRequest setRemoteRepositories(List<ArtifactRepository> remoteRepositories);

    List<ArtifactRepository> getRemoteRepositories();

    ProjectBuildingRequest setPluginArtifactRepositories(List<ArtifactRepository> pluginArtifactRepositories);

    List<ArtifactRepository> getPluginArtifactRepositories();

    /**

        for (ArtifactRepository repo : getRemoteRepositories()) {
            if (repo.getId() != null && repo.getId().equals(repository.getId())) {
                return this;
            }
        }

        getRemoteRepositories().add(repository);

        return this;
    }

    @Override
    public List<ArtifactRepository> getRemoteRepositories() {
        if (remoteRepositories == null) {

                nonNull(session).getRepositorySession(),
                repositorySystem,
                remoteRepositories,
                remoteRepositories == null
                        ? map(session.getRequest().getRemoteRepositories(), RepositoryUtils::toRepo)
                        : null,
                lookup);
        this.mavenSession = session;
        this.mavenRepositorySystem = mavenRepositorySystem;

        // nothing here
    }

    public ArtifactResolutionRequest(RepositoryRequest request) {
        setLocalRepository(request.getLocalRepository());
        setRemoteRepositories(request.getRemoteRepositories());
        setOffline(request.isOffline());
        setForceUpdate(request.isForceUpdate());
    }

    public Artifact getArtifact() {
        return artifact;
    }

        }

        ResolutionGroup cached = cache.get(
                artifact,
                request.isResolveManagedVersions(),
                request.getLocalRepository(),
                request.getRemoteRepositories());

        if (cached != null
                // if the POM has no file, we cached a missing artifact, only return the cached data if no update forced