Like the first column here, just whatever the row's number is:

+--------+-----------------+
| No.       |      Names         |
+--------+-----------------+
| 1         |     AAAAAAA       |
+--------+-----------------+
| 2         |     AAAAAAA       |
+--------+-----------------+
| 3         |     AAAAAAA       |
+--------+-----------------+
| 4         |     AAAAAAA       |
+--------+-----------------+
| 5         |     AAAAAAA       |
+--------+-----------------+
| 6         |     AAAAAAA       |
+--------+-----------------+
| 7         |     AAAAAAA       |
+--------+-----------------+
| 8         |     AAAAAAA       |
+--------+-----------------+

I can't find a way to determine the row number in
AbstractColumn.populateItem:

columnOne = new AbstractColumn() {
    public void populateItem(Item cell, String compId, IModel rowModel) {
        int whatIsMyRowNumber????
        cell.add(new Label(compId, whatIsMyRowNumber????);
    }
};

columnTwo = ....

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