static IVF1<JPopupMenu> mapMethodLike dm_boolFieldPopupMenuItem(S field, O... _) {
  final DynModule m = dm_current_mandatory();
  S humanized = humanizeFormLabel(field);
  ret menu ->
    menu.add(jCheckBoxMenuItem(humanized, (bool) _get(m, field), voidfunc(bool b) {
      m.setField(field, b);
      callF(optPar(_, 'onSet));
    }));
}