sclass ConceptShadow {
  Map map;
  bool refsConvertedToIDs;
  
  *(Concept c) {
    map = conceptShadow_rawMap(c);
  }
  
  void convertRefsToIDs {
    MetaTransformer tf = metaTransformer_collectionAndMap();
    map = toMinimalMap(mapValues(map, o -> tf.transform(lambda1 conceptToIDObj_gen, o)));
  }
}