* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetP_transformation_usage_refine(TransformationUsageRefineAst newP_transformation_usage_refine, NotificationChain msgs) {
TransformationUsageRefineAst oldP_transformation_usage_refine = p_transformation_usage_refine;
p_transformation_usage_refine = newP_transformation_usage_refine;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, QvtAstPackage.TRANSFORMATION_HEADER_AST__PTRANSFORMATION_USAGE_REFINE, oldP_transformation_usage_refine, newP_transformation_usage_refine);
if (msgs == null) msgs = notification; else msgs.add(notification);
}