@Test
    void mergeSnapshotWithEmptyList() throws Exception {
        Snapshot snapshot = new Snapshot();
        snapshot.setBuildNumber(3);
        snapshot.setTimestamp("20200710.072412");
        target.getVersioning().setSnapshot(snapshot);
        target.getVersioning().setLastUpdated("20200921071745");
        SnapshotVersion sv = new SnapshotVersion();

            snapshot = new Snapshot();
            snapshot.setBuildNumber(buildNumber != null ? buildNumber : getBuildNumber(recessive) + 1);
            snapshot.setTimestamp(utcDateFormatter.format(timestamp));

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

        String version = null;
        Snapshot snapshot = versioning.getSnapshot();
        if (snapshot != null) {
            if (snapshot.getTimestamp() != null && snapshot.getBuildNumber() > 0) {
                String newVersion = snapshot.getTimestamp() + "-" + snapshot.getBuildNumber();
                version = baseVersion.replace(Artifact.SNAPSHOT_VERSION, newVersion);
            } else {

	if s, ok := v.ToString(); ok {
		t, err := parseSQLTimestamp(s)
		if err != nil {
			return err
		}
		v.setTimestamp(t)
	} else if b, ok := v.ToBytes(); ok {
		s := string(b)
		t, err := parseSQLTimestamp(s)
		if err != nil {
			return err
		}
		v.setTimestamp(t)
	}
	return nil
}

// inferTypeAsString is used to convert untyped values to string - it

                    }

                    // overwrite
                    if ( s.getTimestamp() == null ? snapshot.getTimestamp() != null
                        : !s.getTimestamp().equals( snapshot.getTimestamp() ) )
                    {
                        s.setTimestamp( snapshot.getTimestamp() );
                        changed = true;
                        updateSnapshotVersions = true;

    }

    public float getUserBoost() {
        return userBoost;
    }

    public ZonedDateTime getTimestamp() {
        return timestamp;
    }

    public void setText(final String text) {
        this.text = text;
    }

    public void setTimestamp(final ZonedDateTime timestamp) {
        this.timestamp = timestamp;
    }

    public void setQueryFreq(final long queryFreq) {

                Matcher matcher = Artifact.VERSION_FILE_PATTERN.matcher(artifact.getVersion());
                if (matcher.matches()) {
                    Snapshot snapshot = new Snapshot();
                    snapshot.setTimestamp(matcher.group(2));
                    try {
                        snapshot.setBuildNumber(Integer.parseInt(matcher.group(3)));

        final ListBody body = new ListBody();
        body.id = dictionaryFile.getId();
        body.type = dictionaryFile.getType();
        body.path = dictionaryFile.getPath();
        body.timestamp = dictionaryFile.getTimestamp();
        return body;
    }

    }

    public void store(final DictionaryFile<? extends DictionaryItem> dictFile, final File file) {
        getDictionaryFile(dictFile.getId()).ifPresent(currentFile -> {
            if (currentFile.getTimestamp().getTime() > dictFile.getTimestamp().getTime()) {
                throw new DictionaryException(dictFile.getPath() + " was updated.");
            }

            // TODO use stream

        byte[] data = new byte[8];
        SMBUtil.writeInt8(ts, data, 0);
        return data;
    }


    /**
     * @return the timestamp
     */
    public long getTimestamp () {
        return SMBUtil.readInt8(getRaw(), 0);
    }