String message = artifact.getArtifactId() + ": resolved to version " + version;
                if (artifact.getRepository() != null) {
                    message += " from repository " + artifact.getRepository().getId();
                } else {
                    message += " from local repository";
                }
                getLogger().debug(message);

        return new PluginVersionResult() {
            @Override
            public String getVersion() {
                return "0.42";
            }

            @Override
            public ArtifactRepository getRepository() {
                return null;
            }
        };
    }

     * @return An Optional containing the repository from which the version was resolved,
     *         or empty Optional if the repository is unknown
     */
    @Nonnull
    Optional<Repository> getRepository(Version version);

            }

            @Override
            public String getArtifactId() {
                return "bazbaz";
            }

            @Override
            public ArtifactRepository getRepository() {
                return null;
            }
        };
    }

    }

    public static WorkspaceRepository getWorkspace(RepositorySystemSession session) {
        WorkspaceReader reader = session.getWorkspaceReader();
        return (reader != null) ? reader.getRepository() : null;
    }

    public static boolean repositoriesEquals(List<RemoteRepository> r1, List<RemoteRepository> r2) {
        if (r1.size() != r2.size()) {
            return false;
        }

        }
        try {
            Files.createDirectories(trackingDir);

            trackingData.add("");
            if (!missing) {
                if (event.getRepository() != null) {
                    trackingData.add("Repository: " + event.getRepository());
                }
            } else {
                List<RemoteRepository> repositories = new ArrayList<>();

        if (event == null) {
            return null;
        } else {
            String wagon = event.getWagon().getClass().getName();

            ArtifactTransferResource artifact = wrap(event.getWagon().getRepository(), event.getResource());

            ArtifactTransferEvent evt;
            if (event.getException() != null) {

     */
    @Nonnull
    List<RemoteRepository> getRemoteRepositories();

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

    /**
     * Traverses this node and potentially its children using the specified visitor.
     *
     * @param visitor the visitor to call back, must not be {@code null}

     *
     * @return The repository from which the plugin prefix was resolved or {@code null} if the prefix was resolved from
     *         the supplied POM.
     */
    ArtifactRepository getRepository();

    static final String VERSION = "99.99";

    private static final WorkspaceRepository WORKSPACE_REPOSITORY = new WorkspaceRepository(REPO_LAYOUT);

    @Override
    public WorkspaceRepository getRepository() {
        return WORKSPACE_REPOSITORY;
    }

    @Override
    public File findArtifact(Artifact artifact) {
        return null;
    }

    @Override