* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetP_param_direction(ParamDirectionAst newP_param_direction, NotificationChain msgs) {
ParamDirectionAst oldP_param_direction = p_param_direction;
p_param_direction = newP_param_direction;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, QvtAstPackage.MAPPING_HEADER_AST__PPARAM_DIRECTION, oldP_param_direction, newP_param_direction);
if (msgs == null) msgs = notification; else msgs.add(notification);
}