Mock LatLngBounds from @ionic-native/google-maps

Hi,
How Can I mock class LatLngBounds from @ionic-native/google-maps please. I dont know how to do it becuase LatLngBounds is no provider but class and when I use cordova-plugin-googlemaps this class is not loaded in browser.

thanks a lot :slight_smile: for any help
Best Regards
Michal