private final Collection<Artifact> artifacts = new ArrayList<>();

    LocalSnapshotMetadata(Artifact artifact, Date timestamp) {
        super(createMetadata(artifact), (Path) null, timestamp);
    }

    LocalSnapshotMetadata(Metadata metadata, Path path, Date timestamp) {
        super(metadata, path, timestamp);
    }

    private static Metadata createMetadata(Artifact artifact) {
        Snapshot snapshot = new Snapshot();

        String qualifier = formatDate(timestamp, true) + '-' + buildNumber;
        version = version.substring(0, version.length() - SNAPSHOT.length()) + qualifier;
        return addSnapshotVersion(versioning, artifact.getExtension(), timestamp, version, buildNumber);
    }

    private static SnapshotVersion addSnapshotVersion(
            Versioning versioning, String extension, Date timestamp, String version, int buildNumber) {

    private final PluginInfo pluginInfo;

    PluginsMetadata(PluginInfo pluginInfo, Date timestamp) {
        super(createRepositoryMetadata(pluginInfo), (Path) null, timestamp);
        this.pluginInfo = pluginInfo;
    }

    PluginsMetadata(PluginInfo pluginInfo, Path path, Date timestamp) {
        super(createRepositoryMetadata(pluginInfo), path, timestamp);
        this.pluginInfo = pluginInfo;
    }

        interpolationProperties.put("maven.build.timestamp.format", "yyyyMMdd'T'HHmm'Z'");
        MavenBuildTimestamp timestamp = new MavenBuildTimestamp(new Date(), interpolationProperties);
        String formattedTimestamp = timestamp.formattedTimestamp();
        assertTrue(formattedTimestamp.endsWith("Z"), "We expect the UTC marker at the end of the timestamp.");
    }

    private final Path path;

    protected final Date timestamp;

    private boolean merged;

    @Deprecated
    protected MavenMetadata(Metadata metadata, File file, Date timestamp) {
        this(metadata, file != null ? file.toPath() : null, timestamp);
    }

    protected MavenMetadata(Metadata metadata, Path path, Date timestamp) {
        this.metadata = metadata;
        this.path = path;

     * @param path The path of the dictionary file.
     * @param timestamp The timestamp of the dictionary file.
     * @return A new dictionary file.
     */
    @Override
    protected DictionaryFile<? extends DictionaryItem> newDictionaryFile(final String id, final String path, final Date timestamp) {
        return new KuromojiFile(id, path, timestamp).manager(dictionaryManager);
    }

     * @param timestamp The last modified timestamp of the file.
     * @return A new {@link StemmerOverrideFile} associated with the dictionary manager.
     */
    @Override
    protected DictionaryFile<? extends DictionaryItem> newDictionaryFile(final String id, final String path, final Date timestamp) {
        return new StemmerOverrideFile(id, path, timestamp).manager(dictionaryManager);
    }

    protected String path;

    /** The timestamp when this dictionary file was created or last modified. */
    protected Date timestamp;

    /**
     * Creates a new DictionaryFile with the specified parameters.
     *
     * @param id the unique identifier for this dictionary file
     * @param path the file path of this dictionary
     * @param timestamp the timestamp of the dictionary file
     */

     */
    class AuthenticationMetadata {
        private final String username;
        private final String domain;
        private final AuthType authType;
        private final long timestamp;
        private final String clientAddress;
        private final String serverAddress;

        public AuthenticationMetadata(String username, String domain, AuthType authType, String clientAddress, String serverAddress) {

    }

    /**
     * Gets the notification timestamp.
     *
     * @return the timestamp
     */
    public long getTimestamp() {
        return timestamp;
    }

    /**
     * Sets the timestamp.
     *
     * @param timestamp the timestamp
     */
    public void setTimestamp(long timestamp) {
        this.timestamp = timestamp;
    }

    /**