isCurrentTimestampHighPrecision = isHighTimestampPrecision(currentTimestamp);
    }

    @Override
    public boolean timestampCanBeUsedToDetectFileChange(String file, long timestamp) {
        if (!isReliableTimestampPrecision(timestamp)) {
            synchronized (lock) {
                if (timestamp == currentTimestamp) {
                    filesWithCurrentTimestamp.add(file);
                } else if (timestamp > currentTimestamp) {