*
     * @return {@code true} if the file has been updated, {@code false} otherwise.
     */
    public boolean isUpdated() {
        final long now = System.currentTimeMillis();
        if (now - lastChecked < checkInterval) {
            lastChecked = now;
            return false;
        }
        lastChecked = now;

        String testSeedProperty = System.getProperty("tests.seed");
        final String testSeed;
        if (testSeedProperty == null) {
            long seed = new Random(System.currentTimeMillis()).nextLong();
            testSeed = Long.toUnsignedString(seed, 16).toUpperCase(Locale.ROOT);
        } else {
            testSeed = testSeedProperty;
        }
        return testSeed;
    }

        source.put(FieldNames.LANGUAGES, Arrays.asList("ja"));
        source.put(FieldNames.KINDS, Arrays.asList("document"));
        source.put(FieldNames.TIMESTAMP, System.currentTimeMillis());

        SuggestItem item = SuggestItem.parseSource(source);

        assertNotNull(item);
        assertEquals("parsed text", item.getText());
        assertEquals(75L, item.getQueryFreq());

    }

    // Test helper classes

    private static class TestSystemHelper extends SystemHelper {
        long processingTime = 0;
        long currentTime = System.currentTimeMillis();

        @Override
        public boolean calibrateCpuLoad() {
            // Do nothing
            return true;
        }

        @Override
        public long getCurrentTimeAsLong() {

        if (domain == null) {
            throw new ServletException("A domain was not specified");
        }
        final long now = System.currentTimeMillis();
        int retry = 1;

        do {
            if (this.dcListExpiration < now) {
                final Address[] list = getTransportContext().getNameServiceClient().getNbtAllByName(domain, 0x1C, null, null);

                // touch file so that this is not checked again until interval has passed
                if (file.exists()) {
                    file.setLastModified(System.currentTimeMillis());
                }
            }
        }

        try {
            mergeMetadata(metadata, remoteRepositories, localRepo);
        } catch (RepositoryMetadataStoreException e) {

            return "10s";
        }
    }

    private static class MockSystemHelper extends SystemHelper {
        @Override
        public long getCurrentTimeAsLong() {
            return System.currentTimeMillis();
        }

        @Override
        public String normalizeLang(String lang) {
            if ("en".equals(lang) || "ja".equals(lang)) {
                return lang;
            }

        serverData.signaturesEnabled = true;
        serverData.signaturesRequired = false;
        serverData.maxNumberVcs = 1;
        serverData.maxRawSize = 65536;
        serverData.serverTime = System.currentTimeMillis();
        serverData.serverTimeZone = -480; // PST
        serverData.encryptionKeyLength = 8;
        serverData.encryptionKey = new byte[] { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, (byte) 0x88 };

        // Create target information with timestamp for NTLMv2
        List<AvPair> pairs = new LinkedList<>();
        pairs.add(new AvTargetName("TARGET"));
        pairs.add(new AvTimestamp(System.currentTimeMillis()));
        pairs.add(new AvFlags(0));
        pairs.add(new AvSingleHost(new byte[48])); // Dummy single host data

        type2.setTargetInformation(AvPairs.encode(pairs));

        return type2;
    }

            if (logger.isDebugEnabled()) {
                logger.debug("[scheduleParentGroupLookup] Async task started for user: {}", user.getName());
            }
            final long startTime = System.currentTimeMillis();
            try {
                final List<String> updatedGroups = new ArrayList<>(initialGroups);
                final List<String> updatedRoles = new ArrayList<>(initialRoles);