Accessing native webview features from forms

Hi,

I have an app that has a webview with links to emails and telephone numbers that ideally should access the dialer and default mail app when selected. It works on iOS currently, but gives a "Page not found" error to the mailto link. I've looked through the forums with my closest lead being: forums.xamarin.com/discussion/comment/89800/

How could I implement that solutions where I have access to "ShouldOverrideURLLoading" from the Forms webview control. I haven't been able to find a place to put that code in a place where forms knows to access it.