* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetP_and_exp(AndExpAst newP_and_exp, NotificationChain msgs) {
AndExpAst oldP_and_exp = p_and_exp;
p_and_exp = newP_and_exp;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, QvtAstPackage.AND_AND_EXP_AST__PAND_EXP, oldP_and_exp, newP_and_exp);
if (msgs == null) msgs = notification; else msgs.add(notification);
}