code: private void addColumn(String label, int width, Column<CmsHistoryResourceBean, ?> col) {
  
          addColumn(col, label);
          setColumnWidth(col, width, Unit.PX);
      }
docs: Helper method for adding a table column with a given width and label.<p>
  
  @param label the column label
  @param width the column width in pixels
  @param col the column to add