code: @Override
      public void forget(final Xid _xid)
      {
          if (JDBCStoreResource.LOG.isDebugEnabled()) {
              JDBCStoreResource.LOG.debug("forget (xid = " + _xid + ")");
          }
      }
docs: Tells the resource manager to forget about a heuristically completed
  transaction branch.
  
  @param _xid  global transaction identifier (not used, because each file
  with the file id gets a new VFS store resource instance)