sv.setUpdated(formatDate(timestamp, false));
        versioning.addSnapshotVersion(sv);

        // make the new snapshot the current one
        versioning.setSnapshot(snapshot);
        versioning.setLastUpdatedTimestamp(timestamp);
        return sv;
    }

    // the format written by Maven 2
    // (https://maven.apache.org/ref/2.2.1/maven-repository-metadata/repository-metadata.html)

        return artifact.getGroupId() + ':' + artifact.getArtifactId() + ':' + artifact.getBaseVersion();
    }

    @Override
    protected void merge(Metadata recessive) {
        metadata.getVersioning().setLastUpdatedTimestamp(timestamp);

        String lastUpdated = metadata.getVersioning().getLastUpdated();

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

        for (Artifact artifact : artifacts) {

            snapshot.setTimestamp(utcDateFormatter.format(timestamp));

            Versioning versioning = new Versioning();
            versioning.setSnapshot(snapshot);
            versioning.setLastUpdatedTimestamp(timestamp);
            lastUpdated = versioning.getLastUpdated();

            metadata.setVersioning(versioning);
        } else {
            snapshot = metadata.getVersioning().getSnapshot();

        return metadata;
    }

    @Override
    protected void merge(Metadata recessive) {
        Versioning versioning = metadata.getVersioning();
        versioning.setLastUpdatedTimestamp(timestamp);

        if (recessive.getVersioning() != null) {
            if (versioning.getLatest() == null) {
                versioning.setLatest(recessive.getVersioning().getLatest());
            }

      <codeSegments>
        <codeSegment>
          <version>1.0.0/1.1.0</version>
          <code><![CDATA[
    public void updateTimestamp()
    {
        setLastUpdatedTimestamp( new java.util.Date() );
    }

    public void setLastUpdatedTimestamp( java.util.Date date )
    {
        java.util.TimeZone timezone = java.util.TimeZone.getTimeZone( "UTC" );