docs: private boolean isEqual(FieldDescriptorDef first, FieldDescriptorDef second)
      {
          return first.getName().equals(second.getName()) &&
                 first.getProperty(PropertyHelper.OJB_PROPERTY_COLUMN).equals(second.getProperty(PropertyHelper.OJB_PROPERTY_COLUMN)) &&
                 first.getProperty(PropertyHelper.OJB_PROPERTY_JDBC_TYPE).equals(second.getProperty(PropertyHelper.OJB_PROPERTY_JDBC_TYPE));
      }