private final Date timestamp;

    VersionsMetadataGenerator(RepositorySystemSession session, InstallRequest request) {
        this(session, request.getMetadata());
    }

    VersionsMetadataGenerator(RepositorySystemSession session, DeployRequest request) {
        this(session, request.getMetadata());
    }

    private VersionsMetadataGenerator(RepositorySystemSession session, Collection<? extends Metadata> metadatas) {

            }

            RepositoryMetadata metadata = new SnapshotArtifactRepositoryMetadata(artifact, snapshot);

            artifact.setResolvedVersion(
                    constructVersion(metadata.getMetadata().getVersioning(), artifact.getBaseVersion()));

            artifact.addMetadata(metadata);
        }
    }

    public String getDeploymentTimestamp() {
        if (deploymentTimestamp == null) {

    private final Date timestamp;

    PluginsMetadataGenerator(RepositorySystemSession session, InstallRequest request) {
        this(session, request.getMetadata());
    }

    PluginsMetadataGenerator(RepositorySystemSession session, DeployRequest request) {
        this(session, request.getMetadata());
    }

    private PluginsMetadataGenerator(RepositorySystemSession session, Collection<? extends Metadata> metadatas) {

        return new MethodDoc(refererMetaData, metaData, comment)
    }

    String getId() {
        return id
    }

    String getName() {
        return metaData.name
    }

    MethodMetaData getMetaData() {
        return metaData
    }

    boolean isDeprecated() {
        return metaData.deprecated && !referringClass.deprecated
    }

    boolean isIncubating() {

	const (
		istioVersionKey  = "ISTIO_VERSION"
		istioProxyShaKey = "ISTIO_PROXY_SHA"
	)

	md := bootstrapDump.GetBootstrap().GetNode().GetMetadata().GetFields()

	if versionPB, ok := md[istioVersionKey]; ok {
		version = versionPB.GetStringValue()
	}
	if shaPB, ok := md[istioProxyShaKey]; ok {
		sha = shaPB.GetStringValue()

    }

    String getId() {
        return id
    }

    String getName() {
        return name
    }

    PropertyMetaData getMetaData() {
        return metaData
    }

    boolean isDeprecated() {
        return metaData.deprecated && !referringClass.deprecated
    }

    boolean isIncubating() {

        }

        repositoryMetadataManager.resolve(metadata, request);

        artifact.addMetadata(metadata);

        Metadata repoMetadata = metadata.getMetadata();
        String version = null;
        if (repoMetadata != null && repoMetadata.getVersioning() != null) {
            version = constructVersion(repoMetadata.getVersioning(), artifact.getBaseVersion());
        }

        LocalMetadataResult result = new LocalMetadataResult(request);

        String path;

        Metadata metadata = request.getMetadata();
        String context = request.getContext();
        RemoteRepository remote = request.getRepository();

        if (remote != null) {
            path = getPathForRemoteMetadata(metadata, remote, context);

         * deployment allows to re-establish the association between the artifacts of the same project.
         */
        for (Metadata metadata : request.getMetadata()) {
            if (metadata instanceof RemoteSnapshotMetadata) {
                RemoteSnapshotMetadata snapshotMetadata = (RemoteSnapshotMetadata) metadata;

            result = repoSystem.deploy(session, request);
        } catch (DeploymentException e) {
            throw new ArtifactDeploymentException(e.getMessage(), e);
        }

        for (Object metadata : result.getMetadata()) {
            if (metadata.getClass().getName().endsWith(".internal.VersionsMetadata")) {
                relatedMetadata.put(versionKey, (MergeableMetadata) metadata);
            }