* @param column the column to be removed
*/
public void removeVerticalRulerColumn(IVerticalRulerColumn column) {
IVerticalRuler ruler= getVerticalRuler();
if (ruler instanceof CompositeRuler) {
CompositeRuler compositeRuler= (CompositeRuler) ruler;
compositeRuler.removeDecorator(column);
}
}