*
     * @param url the URL to validate
     * @return true if the URL starts with a supported file protocol, false otherwise
     */
    public boolean isValidFileProtocol(final String url) {
        return stream(fileProtocols).get(stream -> stream.anyMatch(s -> url.startsWith(s)));
    }

    /**
     * Adds a new web protocol to the supported protocols list.

                if (!urlValue.startsWith("#")) {
                    final String u;
                    if (!protocolHelper.isValidFileProtocol(urlValue)) {
                        if (urlValue.startsWith("/")) {
                            u = "file:" + urlValue;
                        } else {
                            u = "file:/" + urlValue;