/**
     * Queue index name.
     */
    protected String queueIndex = ".crawler.queue";

    /**
     * Data index name.
     */
    protected String dataIndex = ".crawler.data";

    /**
     * Filter index name.
     */
    protected String filterIndex = ".crawler.filter";

    /**
     * Number of shards for the queue index.
     */

    public static class IntervalRule {
        /** Starting hour of the interval */
        protected int fromHours;

        /** Starting minute of the interval */
        protected int fromMinutes;

        /** Ending hour of the interval */
        protected int toHours;

        /** Ending minute of the interval */
        protected int toMinutes;

        /** Delay in milliseconds to apply during this interval */

    /** Configuration key for SPNEGO initialization status. */
    protected static final String SPNEGO_INITIALIZED = "spnego.initialized";

    /** Configuration key for directories to exclude from SPNEGO authentication. */
    protected static final String SPNEGO_EXCLUDE_DIRS = "spnego.exclude.dirs";

    /** Configuration key for enabling delegation in SPNEGO authentication. */

    /** User agent string */
    protected String userAgent = "Crawler";

    /** HTTP client context for requests */
    protected HttpClientContext httpClientContext = HttpClientContext.create();

    /** Proxy host name */
    protected String proxyHost;

    /** Proxy port number */
    protected Integer proxyPort;

    /** Proxy authentication scheme */
    protected AuthScheme proxyAuthScheme = new BasicScheme();

 * Provides a callback mechanism for retrieving user credentials when authentication is required.
 */
public abstract class NtlmAuthenticator {

    /**
     * Default constructor.
     */
    protected NtlmAuthenticator() {
        // Protected constructor for abstract class
    }

    private static NtlmAuthenticator auth;

    private String url;
    private SmbAuthException sae;

    /**

            }
        });
    }

    protected void failIfFileNotExists(LocalContext context, String fileName, String message) {
        Path path = context.cwd.resolve(fileName);
        if (!Files.isRegularFile(path)) {
            context.parsingFailed = true;
            context.parserRequest.logger().error(message + ": " + path);
        }
    }

    protected InvokerRequest getInvokerRequest(LocalContext context) {

        return dstIndex - start;
    }

    @Override
    protected int writeDataWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int readSetupWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    protected int readParametersWireFormat(final byte[] buffer, final int bufferIndex, final int len) {

    //                                                                           =========
    /** createdTime */
    protected Long createdTime;

    /** expiredTime */
    protected Long expiredTime;

    /** name */
    protected String name;

    /** sessionId */
    protected String sessionId;

    // [Referrers] *comment only

    //                                                                           =========
    /** crawlingInfoId */
    protected String crawlingInfoId;

    /** createdTime */
    protected Long createdTime;

    /** key */
    protected String key;

    /** value */
    protected String value;

    // [Referrers] *comment only

    private final Collection<T> backingCollection;

    StandardImplForwardingCollection(Collection<T> backingCollection) {
      this.backingCollection = backingCollection;
    }

    @Override
    protected Collection<T> delegate() {
      return backingCollection;
    }

    @Override
    public boolean addAll(Collection<? extends T> collection) {
      return standardAddAll(collection);
    }

    @Override