Map<String, String> props = service.getFormBuilderProperties();
String langsProperty = props.get("form.builder.languages"); //"gwt,ftl"
String[] langs = langsProperty.split(","); //{ "gwt", "ftl" }
FormRepresentationDecoder decoder = FormEncodingFactory.getDecoder();
String json = getFormTestJsonRepresentation();
FormRepresentation form = decoder.decode(json);
Set<Throwable> errors = new HashSet<Throwable>();
for (String language : langs) {
try {
Translator translator = TranslatorFactory.getInstance().getTranslator(language);
assertNotNull("translator shouldn't be null", translator);