public NotificationChain basicSetIf(XExpression newIf, NotificationChain msgs)
	{
		XExpression oldIf = if_;
		if_ = newIf;
		if (eNotificationRequired())
		{
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, XbasePackage.XIF_EXPRESSION__IF, oldIf, newIf);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}
public NotificationChain basicSetIf ( XExpression newIf , NotificationChain msgs ) { XExpression oldIf = if_ ; if_ = newIf ; if ( eNotificationRequired ( ) ) { ENotificationImpl notification = new ENotificationImpl ( this , Notification . SET , XbasePackage . XIF_EXPRESSION__IF , oldIf , newIf ) ; if ( msgs == null ) msgs = notification ; else msgs . add ( notification ) ; } return msgs ; }
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@generated