public static final String BUILD_TIMESTAMP_FORMAT_PROPERTY = "maven.build.timestamp.format";

    public static final TimeZone DEFAULT_BUILD_TIME_ZONE = TimeZone.getTimeZone("Etc/UTC");

    private String formattedTimestamp;

    public MavenBuildTimestamp() {
        this(Instant.now());
    }

    public MavenBuildTimestamp(Instant time) {

    static final String MAVEN_METADATA_XML = "maven-metadata.xml";

    static DateFormat fmt;

    static {
        TimeZone timezone = TimeZone.getTimeZone("UTC");
        fmt = new SimpleDateFormat("yyyyMMddHHmmss");
        fmt.setTimeZone(timezone);
    }

    protected Metadata metadata;

    private final Path path;

    protected final Date timestamp;

final class RemoteSnapshotMetadata extends MavenSnapshotMetadata {
    public static final String DEFAULT_SNAPSHOT_TIMESTAMP_FORMAT = "yyyyMMdd.HHmmss";

    public static final TimeZone DEFAULT_SNAPSHOT_TIME_ZONE = TimeZone.getTimeZone("Etc/UTC");

    private final Map<String, SnapshotVersion> versions = new LinkedHashMap<>();

    private final Integer buildNumber;

    RemoteSnapshotMetadata(Artifact artifact, Date timestamp, Integer buildNumber) {

    {
        setLastUpdatedTimestamp( new java.util.Date() );
    }

    public void setLastUpdatedTimestamp( java.util.Date date )
    {
        java.util.TimeZone timezone = java.util.TimeZone.getTimeZone( "UTC" );
        java.text.DateFormat fmt = new java.text.SimpleDateFormat( "yyyyMMddHHmmss" );
        fmt.setTimeZone( timezone );
        setLastUpdated( fmt.format( date ) );
    }
          ]]></code>