How to use WKWebView instead of WebView

I'm working on a Xamarin.Forms app with a WebView in MacOS custom rendered. I think by default it is using WebKit.WebView.

I'm having issues loading a local web app (with file:///), but this app works OK in Safari browser. I think that maybe WebKit.WKWebView behaves as Safari does and it's what I need, and the default WebKit.WebView behaves diferent.

¿It's that true? ¿How could I change it to use WebKit.WKWebView in custom rendered?
Thanks.