* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetP_assign_op(AssignOpAst newP_assign_op, NotificationChain msgs) {
AssignOpAst oldP_assign_op = p_assign_op;
p_assign_op = newP_assign_op;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, QvtAstPackage.ASSIGN_ASSIGN_EXP_AST__PASSIGN_OP, oldP_assign_op, newP_assign_op);
if (msgs == null) msgs = notification; else msgs.add(notification);
}