* @param parameterMap The map of parameters.
     */
    public Hc4FormScheme(final Map<String, String> parameterMap) {
        this.parameterMap = parameterMap;
    }

    @Override
    public void processChallenge(final Header header) throws MalformedChallengeException {
        // no-op
    }

    @Override
    public String getSchemeName() {
        return "form";
    }

    @Override