private void merge(
            Artifact artifact, Map<String, VersionInfo> infos, Versioning versioning, ArtifactRepository repository) {
        if (versioning.getRelease() != null && !versioning.getRelease().isEmpty()) {
            merge(RELEASE, infos, versioning.getLastUpdated(), versioning.getRelease(), repository);
        }

        if (versioning.getLatest() != null && !versioning.getLatest().isEmpty()) {

	{ // 2. existing object replication config enabled, no versioning
		name:         "existing object replication config enabled, no versioning",
		info:         ObjectInfo{Size: 100},
		rcfg:         replicationConfig{Config: &configs[0]},
		expectedSync: false,
	},
	{ // 3. existing object replication config enabled, versioning suspended
		name:         "existing object replication config enabled, versioning suspended",

            result.addException(e);
        }

        return (versioning != null) ? versioning : new Versioning();
    }

    private Versioning filterVersionsByRepositoryType(Versioning versioning, RemoteRepository remoteRepository) {
        if (remoteRepository == null) {
            return versioning;
        }

        Versioning filteredVersions = versioning.clone();

## Concepts

- All Buckets on MinIO are always in one of the following states: unversioned (the default) and all other existing deployments, versioning-enabled, or versioning-suspended.

    private static void addSnapshotVersionLegacy(Versioning versioning, Date timestamp, int buildNumber) {
        Snapshot snapshot = new Snapshot();
        snapshot.setBuildNumber(buildNumber);
        snapshot.setTimestamp(formatDate(timestamp, true));

        versioning.setSnapshot(snapshot);
        versioning.setLastUpdatedTimestamp(timestamp);
    }

                changed = true;
            }
        }

        Versioning versioning = sourceMetadata.getVersioning();
        if ( versioning != null )
        {
            Versioning v = getVersioning();
            if ( v == null )
            {
                v = new Versioning();
                setVersioning( v );
                changed = true;
            }

        Versioning versioning = source.getVersioning();
        if (versioning != null) {
            String timestamp = versioning.getLastUpdated() == null
                    ? ""
                    : versioning.getLastUpdated().trim();

            if (versioning.getRelease() != null
                    && !versioning.getRelease().isEmpty()

        boolean changed = false;

        if (metadata != null && reference != null) {
            Versioning versioning = metadata.getVersioning();
            Versioning versioningRef = reference.getVersioning();
            if (versioning != null && versioningRef != null) {
                String lastUpdated = versioning.getLastUpdated();
                String now = versioningRef.getLastUpdated();

		t = b.BucketTargetsConfigUpdatedAt
	}
	if b.BucketTargetsConfigMetaUpdatedAt.After(t) {
		t = b.BucketTargetsConfigMetaUpdatedAt
	}

	return t
}

// Versioning returns true if versioning is enabled
func (b BucketMetadata) Versioning() bool {
	return b.LockEnabled || (b.versioningConfig != nil && b.versioningConfig.Enabled()) || (b.objectLockConfig != nil && b.objectLockConfig.Enabled())
}

Note that objects with `null` versions, i.e. objects created prior to enabling versioning break the immutability guarantees provided by versioning. When existing object replication is enabled, these objects will be replicated as `null` versions to the remote targets provided they are not present on the target or if `null` version of object on source is newer than the `null` version of object on target.