class WilmaApplication {

    public String getVersionInformation() {
        LOG.debug("Call version information API.");
        String url = buildUrl(VERSION_INFO_URL_POSTFIX);

        String version = null;

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

        return version;
    }

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

}