* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetOperator(UnaryModificationOperator newOperator, NotificationChain msgs) {
UnaryModificationOperator oldOperator = operator;
operator = newOperator;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, ExpressionsPackage.UNARY_MODIFICATION_EXPRESSION__OPERATOR, oldOperator, newOperator);
if (msgs == null) msgs = notification; else msgs.add(notification);
}