anchor.diff:          ssml = Some ssml
         }
   
  -  let private makeImage image =
  +  let private makeImage image : Interop.Image =
       {
         smallImageUrl = image.SmallUrl
         largeImageUrl = image.LargeUrl
       }
   
  -  let private defaultCard =
  +  let private defaultCard : Interop.Card =
       {
         ``type`` = Interop.CardType.Simple
         title = None
  
positive.code:   let linkAccount speechOption =
      { empty with Card = Some LinkAccount }
  
  let handler = createHandler (fun context request -> async {
    let request, session = Request.ofRawRequest None request
    let response =
      Response.say (Text "Hello world!")
  
negative.code:           callback.Invoke(Some ex, None)
        } |> Async.StartImmediate
  
  type Slots = Map<string, string>
  
  type Request =
  