@Override
  public boolean replace(K key, @Nullable V oldValue, V newValue) {
    checkNotNull(key);
    checkNotNull(newValue);
    if (oldValue == null) {
      return false;
    }
    int hash = hash(key);
    return segmentFor(hash).replace(key, hash, oldValue, newValue);
  }

  @CanIgnoreReturnValue
  @Override
  public @Nullable V replace(K key, V value) {
    checkNotNull(key);

            final RobotsTxt robotsTxt = new RobotsTxt();
            final List<Directive> currentDirectiveList = new ArrayList<>();
            boolean isGroupRecordStarted = false;

            while ((line = reader.readLine()) != null) {
                try {
                    // Strip comments and trim whitespace
                    line = stripComment(line).trim();
                    if (StringUtil.isEmpty(line)) {

            }
            available = generatorList.stream().map(s -> {
                if (s.startsWith("${path}")) {
                    for (final String p : pathList) {
                        final File f = new File(s.replace("${path}", p));
                        if (f.exists()) {
                            final String filePath = f.getAbsolutePath();
                            filePathMap.put(s, filePath);

   * previous value (if any) will continue to be returned by {@code get(key)} unless it is evicted.
   * If the new value is loaded successfully it will replace the previous value in the cache; if an
   * exception is thrown while refreshing the previous value will remain, <i>and the exception will
   * be logged (using {@link java.util.logging.Logger}) and swallowed</i>.
   *

	// Header indicates if its a GET/HEAD proxy request for active-active replication
	MinIOSourceProxyRequest = "X-Minio-Source-Proxy-Request"
	// Header indicates that this request is a replication request to create a REPLICA
	MinIOSourceReplicationRequest = "X-Minio-Source-Replication-Request"
	// Header checks replication permissions without actually completing replication
	MinIOSourceReplicationCheck = "X-Minio-Source-Replication-Check"

            }
            for (final Pair<Pattern, String> regexData : pair.getSecond()) {
                if (regexData.getFirst().matcher(query).matches()) {
                    contentList.add(regexData.getSecond().replace(queryPlaceHolder, query));
                }
            }
            return contentList.toArray(new String[contentList.size()]);
        }
        return StringUtil.EMPTY_STRINGS;
    }

        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments
                final String replacedLine = line.replaceAll("#.*$", StringUtil.EMPTY).trim();

                // Skip empty lines or comment lines

                    }
                }
            }
        } else {
            enc = fessConfig.getCrawlerDocumentFileNameEncoding();
        }

        final String escapedUrl = escapePlus ? url.replace("+", "%2B") : url;
        try {
            return URLDecoder.decode(escapedUrl, enc);
        } catch (final Exception e) {
            return url;
        }
    }

    /**

        // modify parent
        File parent = new File(tempDir.toFile(), "pom.xml");
        String parentContent = new String(Files.readAllBytes(parent.toPath()), StandardCharsets.UTF_8);
        parentContent = parentContent.replace(
                "<packaging>pom</packaging>",
                "<packaging>pom</packaging><properties><addedProperty>addedValue</addedProperty></properties>");

        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                if (line.length() == 0 || line.charAt(0) == '#') {
                    if (updater != null) {
                        updater.write(line);
                    }