* Returns the value of the request header.
     * @return The value of the request header.
     */
    public String getValue() {
        return value;
    }

    /**
     * Sets the value of the request header.
     * @param value The value of the request header.
     */
    public void setValue(final String value) {
        this.value = value;
    }

    /**
     * Checks if the request header is valid.

                line = stripComment(line).trim();
                if (StringUtil.isEmpty(line)) {
                    continue;
                }

                String value = getValue(USER_AGENT_RECORD, line);
                if (value != null) {
                    if (isGroupRecordStarted) {
                        currentDirectiveList.clear();
                        isGroupRecordStarted = false;

            if (value != null) {
                for (final Map.Entry<Pattern, String> entry : passwordMap.entrySet()) {
                    if (entry.getKey().matcher(value).matches()) {
                        return entry.getValue();
                    }
                }
            }
        }

        if (params != null && url != null) {
            final String value = params.get(ExtractData.FILE_PASSWORDS);

        for (final Map.Entry<String, Map<String, AccessResultImpl<Long>>> entry : sessionMap.entrySet()) {
            if (entry.getValue() != null) {
                final AccessResultImpl<Long> ar = entry.getValue().get(url);
                if (ar != null) {
                    acList.add(ar);
                }
            }
        }
        // TODO order
        return acList;

        @Override
        public void startElement(final String uri, final String localName, final String qName, final Attributes attributes) {
            if ("field".equals(qName)) {
                fieldName = attributes.getValue("name");
                if (StringUtil.isBlank(fieldName)) {
                    fieldName = null;
                }
                buffer.setLength(0);
            } else if ("list".equals(qName)) {

                parser.setFeature(entry.getKey(), "true".equalsIgnoreCase(entry.getValue()));
            }

            // property
            for (final Map.Entry<String, String> entry : propertyMap.entrySet()) {
                parser.setProperty(entry.getKey(), entry.getValue());
            }
        } catch (final Exception e) {

            if (logger.isDebugEnabled()) {
                logger.debug("Checking path: {} against entry: {}", path, entry.getKey());
            }
            if (path.startsWith(entry.getKey())) {
                return entry.getValue();
            }
        }
        return null;
    }

            if (pos == current) {
                newClientMap.put(Pattern.compile(regex), client);
                added = true;
            }
            newClientMap.put(entry.getKey(), entry.getValue());
            current++;
        }
        if (!added) {
            newClientMap.put(Pattern.compile(regex), client);
        }
        clientMap = newClientMap;
    }

    /**

            return null;
        }

        for (final Map.Entry<String, SmbAuthentication> entry : authMap.entrySet()) {
            if (path.startsWith(entry.getKey())) {
                return entry.getValue();
            }
        }
        return null;
    }

     */
    public synchronized void register(final CrawlerClientFactory crawlerClientFactory) {
        clientMap.entrySet().stream().forEach(e -> load(crawlerClientFactory, e.getKey(), e.getValue()));
        clientFactoryList.add(crawlerClientFactory);
        if (clientFactoryList.size() > maxClientFactorySize) {
            clientFactoryList.remove(0);
        }
    }

    /**