* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetExterior(AbstractRingPropertyType newExterior, NotificationChain msgs) {
AbstractRingPropertyType oldExterior = exterior;
exterior = newExterior;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, GmlPackage.POLYGON_TYPE__EXTERIOR, oldExterior, newExterior);
if (msgs == null) msgs = notification; else msgs.add(notification);
}