public void setEnd(YearMonthDay end) { checkPermissionsToMakeOperations();
public void setEnd(YearMonthDay end) {
    public void setEnd(YearMonthDay end) {		checkPermissionsToMakeOperations();        checkExtensionSpaceOccupationIntersection(getBegin(), end, getExtension());        super.setEnd(end);    }      