}

    /**
     * Gets the repository that causes this error (if any).
     *
     * @return The repository that causes this error or {@code null} if not known.
     */
    public Repository getRepository() {
        return repository;
    }

    /**
     * Get the repository the metadata was located in.
     *
     * @return the repository
     */
    ArtifactRepository getRepository();

    /**
     * Set the repository the metadata was located in.
     *
     * @param remoteRepository the repository
     */
    void setRepository(ArtifactRepository remoteRepository);

    /**
     * Get the repository metadata associated with this marker.
     *

        return getVersions().isEmpty()
                ? Optional.empty()
                : Optional.of(getVersions().get(getVersions().size() - 1));
    }

    @Nonnull
    Optional<Repository> getRepository(Version version);

    }

    public Object getKey() {
        return groupId;
    }

    public boolean isSnapshot() {
        return false;
    }

    public ArtifactRepository getRepository() {
        return null;
    }

    public void setRepository(ArtifactRepository remoteRepository) {
        // intentionally blank
    }

    private boolean isSnapshot(ArtifactVersion version) {
        return version != null && ArtifactUtils.isSnapshot(version.getQualifier());
    }

    public ArtifactRepository getRepository() {
        return null;
    }

    public void setRepository(ArtifactRepository remoteRepository) {
        /*
         * NOTE: Metadata at the g:a level contains a collection of available versions. After merging, we can't tell

    String getDependencyConflictId();

    void addMetadata(ArtifactMetadata metadata);

    Collection<ArtifactMetadata> getMetadataList();

    void setRepository(ArtifactRepository remoteRepository);

    ArtifactRepository getRepository();

    void updateVersion(String version, ArtifactRepository localRepository);

    String getDownloadUrl();

    void setDownloadUrl(String downloadUrl);

        }
        try {
            Files.createDirectories(trackingDir);

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

        super(params);
    }

    @Override
    public Violation maybeViolation(final JApiCompatibility member) {

        if (shouldSkipViolationCheckFor(member) || getRepository().isSince(getCurrentVersion(), member)) {
            return null;
        }

        return acceptOrReject(member, Violation.error(member, SINCE_ERROR_MESSAGE + getCurrentVersion()));
    }

    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

     */
    @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}