Extend custom C# Akka actors using Akka F# idiomatic API (Akka.FSharp)

Question

I have a .NET library written in C#, containing a number of Akka actor classes (inheriting from Akka.ActorBase subclasses, like UntypedActor or ReceivActor). I would like to use this library (for an application or for extending it), using F#. Of course I know that I can write OO code in F#, but what I would like to do is use Akka.FSharp idiomatic API. Is this possible? Has anyone already done it? Some examples would be appreciated if available.