void ActiveEnumerableElementFaultChanged(object sender, ElementFaultChangeEventArgs e) => ElementFaultChanged?.Invoke(this, e);
 void SourceFaultChanged(object sender, ElementFaultChangeEventArgs e) => ElementFaultChanged?.Invoke(sender, e);
 void ElementFaultChangeNotifierElementFaultChanged(object sender, ElementFaultChangeEventArgs e) => ElementFaultChanged?.Invoke(sender, e);
 protected virtual void OnElementFaultChanged(ElementFaultChangeEventArgs e) =>
 ElementFaultChanged?.Invoke(this, e);