docs: RowIterator findFkRef(Session session, Object[] row, boolean delete) {
  
          if (row == null || ArrayUtil.hasNull(row, core.mainCols)) {
              return core.refIndex.emptyIterator();
          }
  
          PersistentStore store = session.sessionData.getRowStore(core.refTable);
  
          return core.refIndex.findFirstRow(session, store, row, core.mainCols);
      }