code: @Override
      public String loadDataFromNetwork() throws Exception {
          try {
              Ln.d("Call web service " + url);
              return IOUtils.toString(new InputStreamReader(new URL(url).openStream(), CharEncoding.UTF_8));
          } catch (final MalformedURLException e) {
              Ln.e(e, "Unable to create URL");
              throw e;
          } catch (final IOException e) {
              Ln.e(e, "Unable to download content");
              throw e;
          }
      }
docs: will be invoked in remote service