static Pair<O[][], O[]> fillTableWithData_makeData(L<L> rows, LS colNames) {

  ret fillTableWithData_makeData(rows, asStringArray(colNames));

}

static Pair<O[][], O[]> fillTableWithData_makeData(L<L> rows, S... colNames) {

  Object[][] data = new Object[rows.size()][];

  int w = 0;

  for (int i = 0; i < rows.size(); i++) {

    L l = rows.get(i);

    Object[] r = new Object[l.size()];

    for (int j = 0; j < l.size(); j++) {

      O o = l.get(j);

      //print ifdef fillTableWithData_makeData_debug("fillTable " + getClass(o));

      if (o cast BufferedImage) o = imageIcon(o);

      ifclass RGBImage

        if (o cast RGBImage) o = imageIcon(o);

      endif

      /*if (o cast File)

        o = f2s(o);*/

      r[j] = o;

    }

    data[i] = r;

    w = Math.max(w, l.size());

  }

  O[] columnNames = new O[w];

  for (int i = 0; i < w; i++)

    columnNames[i] = i < l(colNames) ? colNames[i] : "?";

  ret pair(data, columnNames);

}