private final Integer buildNumber;

    RemoteSnapshotMetadata(Artifact artifact, Date timestamp, Integer buildNumber) {
        super(createRepositoryMetadata(artifact), null, timestamp);
        this.buildNumber = buildNumber;
    }

    private RemoteSnapshotMetadata(Metadata metadata, Path path, Date timestamp, Integer buildNumber) {
        super(metadata, path, timestamp);

        for (Artifact artifact : artifacts) {
            if (artifact.isSnapshot()) {
                Object key = RemoteSnapshotMetadata.getKey(artifact);
                RemoteSnapshotMetadata snapshotMetadata = snapshots.get(key);
                if (snapshotMetadata == null) {
                    snapshotMetadata = new RemoteSnapshotMetadata(artifact, timestamp, buildNumber);
                    snapshots.put(key, snapshotMetadata);
                }

        df.setCalendar(new GregorianCalendar());
        df.setTimeZone(RemoteSnapshotMetadata.DEFAULT_SNAPSHOT_TIME_ZONE);
        return df.format(new Date());
    }

    @Test
    void gregorianCalendarIsUsed() {
        String dateBefore = gregorianDate();

        RemoteSnapshotMetadata metadata =
                new RemoteSnapshotMetadata(new DefaultArtifact("a:b:1-SNAPSHOT"), new Date(), null);

                relatedMetadata.put(versionKey, (MergeableMetadata) metadata);
            }
            if (snapshotKey != null && metadata.getClass().getName().endsWith(".internal.RemoteSnapshotMetadata")) {
                relatedMetadata.put(snapshotKey, (MergeableMetadata) metadata);
            }
        }

        artifact.setResolvedVersion(result.getArtifacts().iterator().next().getVersion());
    }