return "[ERTransactionRecord: page = " + _page + "; context = " + _context + "; key = " + _key + "; oldPage? " + _oldPage + "]";
return "[TransactionRecord: page = " + _page + "; context = " + _context.contextID() + "; key = " + _key + "; oldPage? " + _oldPage + "]";
    public String toString() {      return "[ERTransactionRecord: page = " + _page + "; context = " + _context + "; key = " + _key + "; oldPage? " + _oldPage + "]";    }