public String addQuestionOption(String questionId, String optionDescription) throws FacebookException {
        ensureAuthorizationEnabled();
        JSONObject json = post(buildEndpoint(questionId, "options"),
                                new HttpParameter[]{new HttpParameter("option", optionDescription)})
                          .asJSONObject();
        try {
            return json.getString("id");
        } catch (JSONException jsone) {
            throw new FacebookException(jsone.getMessage(), jsone);
        }
   }