public Collection<MemberInfoType> getSelectedMemberInfos() {
    ArrayList<MemberInfoType> result = new ArrayList<>(myMemberInfos.size());
    for (MemberInfoType info : myMemberInfos) {
      if (info.isChecked()) {
        result.add(info);
      }
    }
    return result;
  }
public Collection<MemberInfoType> getSelectedMemberInfos()