* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetP_class_extension(ClassExtensionAst newP_class_extension, NotificationChain msgs) {
ClassExtensionAst oldP_class_extension = p_class_extension;
p_class_extension = newP_class_extension;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, QvtAstPackage.CLASS_HEADER_AST__PCLASS_EXTENSION, oldP_class_extension, newP_class_extension);
if (msgs == null) msgs = notification; else msgs.add(notification);
}