public void columnAddStyleName(int rows, int cols) {
   HTMLTable table = createTable(rows, cols);
   resetTimer();
   ColumnFormatter formatter = table.getColumnFormatter();
   for (int i = 0; i < cols; i++) {
     formatter.addStyleName(i, "fooStyle");
   }
   timing("column.addStyleName(" + rows + ", " + cols + ")");
 }