docs: public DialogResponse<T> getLastResponse() {
          String saved = saveResponseId == null ? null : PropertyUtil.getValue(SAVED_RESPONSE_PROP_NAME, saveResponseId);
          int i = NumberUtils.toInt(saved, -1);
          DialogResponse<T> response = i < 0 || i >= responses.size() ? null : responses.get(i);
          return response == null || response.isExcluded() ? null : response;
      }