anchor.diff:      let LocationRectClass =
           Class "Microsoft.Maps.LocationRect"
           |=> LocationRect
  -        |+> [
  +        |+> Static [
                   Constructor (Location * T<float> * T<float>)
   
                   "fromCorners" => Location * Location ^-> LocationRect
  
positive.code:         Class "Microsoft.Maps.Polyline"
          |=> Polyline
          |=> Implements [EntityInterface]
          |+> [
                  Constructor (Type.ArrayOf Location)
                  Constructor (Type.ArrayOf Location * PolylineOptions)
              ]
          |+> Protocol
              [
                  "getLocations" => T<unit> ^-> Type.ArrayOf Location
                  |> WithComment "Returns the locations that define the polyline."
  
negative.code:     let ItineraryInstructionClass =
          Class "Microsoft.Maps.ItineraryInstruction"
          |=> ItineraryInstruction
          |+> Instance
              [
                  "maneuverType" =? T<string>
                  "text" =? T<string>
  