static new ThreadLocal<Boolean> DynamicObject_loading;

static class DynamicObject {
  S className; // just the name, without the "main$"
  /*new XXX - not initializing anymore - may cause problems in the odd legacy program */ LinkedHashMap<S, O> fieldValues;
  
  *() {}
  // className = just the name, without the "main$"
  *(S *className) {}
  
  Map<S, O> _map() { ret fieldValues; }
}

We merged stuff from Concept here to allow for loading unknown concepts.