@Override
    public Object getField(NameLocationPair pair, int columnIndex) {
      return switch (columnIndex) {
        case 0 -> pair.myName;
        case 1 -> pair.myLocation;
        case 2 -> !pair.myShared;
        default -> "";
      };
    }
@Override
    public Object getField(NameLocationPair pair, int columnIndex)