//                                                                        ============
    protected String convertEmptyToNull(String value) {
        return (value != null && value.length() == 0) ? null : value;
    }

    // ===================================================================================
    //                                                                              Source

         *
         * @param address the IP address
         */
        public WitnessIPAddress(InetAddress address) {
            this.address = address;
            this.flags = address.getAddress().length == 4 ? IPV4 : IPV6;
        }

        /**
         * Gets the IP address.
         *
         * @return the IP address
         */
        public InetAddress getAddress() {
            return address;

                if (Strings.isNullOrEmpty(reading)) {
                    reading = transliterator.transliterate(att.toString());
                }
                kanaBuf.append(reading);
                offset += term.length();
            }
        }

        return kanaBuf.toString();
    }

    /**
     * Checks if the tokenizer is enabled.
     * @param factory The tokenizer factory.

    }

    protected void createSynonymMap(final boolean reload) {
        try (Reader rulesReader = getReader(reload)) {
            if (rulesReader instanceof StringReader && ((StringReader) rulesReader).toString().length() == 0) {
                synonymMap = null;
                return;
            }

            SynonymMap.Builder parser = null;

            if ("wordnet".equalsIgnoreCase(settings.get("format"))) {

        // The provider's toString might not contain the exact class name
        // Just verify it's not null and contains some meaningful info
        assertTrue("toString should not be empty", toString.length() > 0);
    }

    public void test_hook_withNullAssistantDirector() {
        // When & Then - Should not throw exception
        try {
            curtainBeforeHook.hook(null);
        } catch (Exception e) {

        // Test that stack trace is properly captured
        ThemeException exception = new ThemeException("Stack trace test");

        assertNotNull(exception.getStackTrace());
        assertTrue(exception.getStackTrace().length > 0);

        // Verify that this test method appears in the stack trace
        boolean foundTestMethod = false;
        for (StackTraceElement element : exception.getStackTrace()) {

        Metadata metadata = null;

        File metadataFile = new File(
                localRepository.getBasedir(), localRepository.pathOfLocalRepositoryMetadata(this, remoteRepository));

        if (metadataFile.length() == 0) {
            if (!metadataFile.delete()) {
                // sleep for 10ms just in case this is windows holding a file lock
                try {
                    Thread.sleep(10);

        return 1;
      case 1:
        return n;
      default:
        if (n < factorials.length) {
          return factorials[n] / (factorials[k] * factorials[n - k]);
        } else if (k >= biggestBinomials.length || n > biggestBinomials[k]) {
          return Long.MAX_VALUE;
        } else if (k < biggestSimpleBinomials.length && n <= biggestSimpleBinomials[k]) {
          // guaranteed not to overflow
          long result = n--;

                if (ComponentUtil.getFessConfig().isAzureAdUseDomainServices() && username.indexOf('@') >= 0) {
                    final String[] values = username.split("@");
                    if (values.length > 1) {
                        permissionSet.add(systemHelper.getSearchRoleByUser(values[0]));
                    }
                }

    private CurlRequest getCurlRequest(final String header) {
        if (StringUtil.isBlank(header)) {
            return null;
        }

        final String[] values = header.split(" ");
        if (values.length != 2) {
            return null;
        }

        final String path;
        if (values[1].startsWith("/")) {
            path = values[1];
        } else {
            path = "/" + values[1];