* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetP_module_usage(ModuleUsageAst newP_module_usage, NotificationChain msgs) {
ModuleUsageAst oldP_module_usage = p_module_usage;
p_module_usage = newP_module_usage;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, QvtAstPackage.LIBRARY_HEADER_AST__PMODULE_USAGE, oldP_module_usage, newP_module_usage);
if (msgs == null) msgs = notification; else msgs.add(notification);
}