void copyAccessorsFrom(PropertyGroup group) {
    if (group.getGetter() != null) setGetter(group.getGetter());
    if (group.getSetter() != null) setSetter(group.getSetter());
    if (group.getField() != null) setField(group.getField());
    myChildren.addAll(group.myChildren);
  }
void copyAccessorsFrom(PropertyGroup group)