}
}
private void addFactTypeKnownValueChangeHandler(final RuleModellerWidget widget, final int layoutRow) {
widget.addFactTypeKnownValueChangeHandler(new FactTypeKnownValueChangeHandler() {
@Override
public void onValueChanged(FactTypeKnownValueChangeEvent factTypeKnownValueChangeEvent) {
if (!widget.isFactTypeKnown()) {
addInvalidPatternIcon();
} else {