class WilmaApplication {

    public JSONObject callGetService(final String serviceQueryString) {
        LOG.debug("Call special service with request: " + serviceQueryString);

        String url = buildUrl(SERVICE_URL_POSTFIX + serviceQueryString);
        JSONObject jsonObject = null;

        LOG.debug("Send getter request to: " + url);
        Optional<String> response = wilmaClient.sendGetterRequest(url);
        if (response.isPresent()) {
            jsonObject = new JSONObject(response.get());
        }

        return jsonObject;
    }

    public  WilmaApplication(WilmaServiceConfig config);
    public  WilmaApplication(WilmaServiceConfig config, WilmaHttpClient client);

}