anchor.diff:     *
      *      MyEntity.be(String oid): super(oid);
      */
  -  Entity.be(this.oid): stored = true;
  +  Entity.be(this.oid) {
  +    stored = true;
  +  }
   
     ///The OID.
     final String oid;
  
positive.code:     if (data != null) {
        entity.read(access.reader, data, fds);
        if (entity is MultiLoad) {
          if (fds == null)
            (entity as MultiLoad).loadedFields.add(_ALL_FIELDS_LOADED);
          else
            (entity as MultiLoad).loadedFields.addAll(fds);
        }
        return entity;
      }
  
negative.code: }
  
  Set _toSet(Iterable it) => it is Set || it == null ? it: it.toSet();
  