svoid mapMethodLike dm_copyFieldToObject(S field, O object, O... _) {
  optPar bool verbose;
  DynModule mod = dm_current_mandatory();
  dm_onFieldChangeAndNow(field, r {
    O value = getOpt(mod, field);
    if (verbose) print("dm_copyFieldToObject " + className(object) + " " + field + "=" + value);
    setOpt(object, field, value);
  });
}

Began life as a copy of #1023013