return normalizeEncoding(encoding);
    }

    protected String normalizeEncoding(final String encoding) {
        try {
            final EncodingHelper encodingHelper = crawlerContainer.getComponent("encodingHelper");
            return encodingHelper.normalize(encoding);
        } catch (final Exception e) {
            // NOP
        }
        return encoding;
    }

                .singleton("sitemapsHelper", SitemapsHelper.class).singleton("logHelper", LogHelperImpl.class)
                .singleton("encodingHelper", EncodingHelper.class).singleton("contentLengthHelper", ContentLengthHelper.class)
                .singleton("mimeTypeHelper", MimeTypeHelperImpl.class)