code: public static void deletePropertiesAndMarker(BeanId id) {
          Query query = getEmOrFail().createNamedQuery(DELETE_ALL_PROPERTIES_FOR_BEANID_NAME);
          query.setParameter(1, id.getInstanceId());
          query.setParameter(2, id.getSchemaName());
          // empty will marker will delete the marker aswell
          query.setParameter(3, "");
          query.executeUpdate();
  
      }
docs: Deletes the JpaBean and list its properties and the marker.