* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetChild(UnaryExpressionChild newChild, NotificationChain msgs) {
UnaryExpressionChild oldChild = child;
child = newChild;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, ExpressionsPackage.UNARY_EXPRESSION__CHILD, oldChild, newChild);
if (msgs == null) msgs = notification; else msgs.add(notification);
}