code: public String getTitle() {
          final String key = String.format("pm.field.%s.%s", getEntity().getId(), getId());
          final String message = getPm().message(key);
          if (key.equals(message)) {
              final Entity extendzEntity = getEntity().getExtendzEntity();
              if (extendzEntity != null && extendzEntity.getFieldById(getId()) != null) {
                  return extendzEntity.getFieldById(getId()).getTitle();
              }
          }
          return message;
      }
docs: Returns the internationalized field title