void SourceFaultChanging(object sender, ElementFaultChangeEventArgs e) => ElementFaultChanging?.Invoke(sender, e);
void ActiveEnumerableElementFaultChanging(object sender, ElementFaultChangeEventArgs e) => ElementFaultChanging?.Invoke(this, e);
protected virtual void OnElementFaultChanging(ElementFaultChangeEventArgs e) => ElementFaultChanging?.Invoke(this, e);