IsOverwriteModeActiveChanged evenArguments have been modified in v2019.1

Hi,
the following event arguments for the IsOverwriteModeActiveChanged are modified from

<editor:SyntaxEditor 
x:Name="editor"
IsOverwriteModeActiveChanged="OnSyntaxEditorIsOverwriteModeActiveChanged"
/>

private void OnSyntaxEditorIsOverwriteModeActiveChanged(object sender, BooleanPropertyChangedRoutedEventArgs e)

to

private void OnSyntaxEditorIsOverwriteModeActiveChanged(object sender, RoutedEventArgs e)

Earlier I used to use the e.NewValue to perform some operations on that, now that BooleanPropertyChangedRoutedEventArgs has been replaced with RoutedEventArgs, how will I get the NewValue?

Is it that I have to directly use the (sender as SyntaxEditor).IsOverwriteModeActive instead of the e.NewValue?

Thanks in advance.