public Column<T, ?> getColumn(int col) {
        checkColumnBounds(col);
        return columns.get(col);
    }
Get the column at the specified index.

@param col the index of the column to retrieve
@return the {@link Column} at the index
stroom-core-client-widget/src/main/java/com/google/gwt/user/cellview/client/AbstractCellTable.java