/** Helper for processing robots.txt files */
    @Resource
    protected RobotsTxtHelper robotsTxtHelper;

    /** Helper for managing content length limits */
    @Resource
    protected ContentLengthHelper contentLengthHelper;

    /** Helper for determining MIME types */
    @Resource
    protected MimeTypeHelper mimeTypeHelper;

    /** The HTTP client instance */

                .singleton("logHelper", LogHelperImpl.class)
                .singleton("encodingHelper", EncodingHelper.class)
                .singleton("contentLengthHelper", ContentLengthHelper.class)
                .singleton("mimeTypeHelper", MimeTypeHelperImpl.class)
                .<FileTransformer> singleton("fileTransformer", FileTransformer.class, transformer -> {