Xamarin.Forms equivalent of a modal form sheet?

We have tended to use the FormSheet modal UI style extensively in the past ie. Creating a new record in a table, record entered in modal form.
However, an 'out-the-box' replacement for this doesn't appear to exist in Xamarin.Forms.

What current alternatives exist for Form Sheet replacement aka. a modal form popup?
NB. A quick internet search revealed the "PopupLayout" control included in the Xamarin Forms Lab project on GitHub, but this seems to be a work in progress.

Any ideas or suggestions would be most appreciated!