eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.CHART__VERSION, oldVersion, version));
eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.CHART__VERSION, oldVersion, version, !oldVersionESet));
    public void setVersion(String newVersion)    {        String oldVersion = version;        version = newVersion;        if (eNotificationRequired())            eNotify(new ENotificationImpl(this, Notification.SET, ModelPackage.CHART__VERSION, oldVersion, version));    }