UpdateSourceTrigger

I would like to know if in Xamarin.Forms it is also possible to modify two-way binding with the “UpdateSourceTrigger”option like in WPF, where it is possible to specify a bound attribute for example like this:

Text="{Binding StringData, Mode=TwoWay, UpdateSourceTrigger=Explicit}"

I just found this unanswered question:

https://forums.xamarin.com/discussion/28077/having-an-issue-with-a-binding-is-there-an-equivalent-to-updatesourcetrigger-somewhere

Does anyone know whether and how this is implemented in Xamarin.Forms?