anchor.diff:  open System
   open Akka.Actor
   
  -[<AutoOpen>]
   module Rpc =
   
   
  
positive.code:     let spawnOpt (actorFactory : IActorRefFactory) (name : string) (f : Actor<'Message> -> Cont<obj, 'Returned>) 
          (options : SpawnOption list) : IActorRef = 
          let nf (shadAct : Akka.FSharp.Actors.Actor<obj>) =
              let act = Rpc.Actor<'Message>(shadAct)
              f act
  
          let e = Linq.Expression.ToExpression(fun () -> new FunActor<obj, 'Returned>(nf))
  
negative.code: 
              x.AsyncResult req
  
      /// <summary>
      /// Spawns an actor using specified actor computation expression, with custom spawn option settings.
      /// The actor can only be used locally. 
  