anchor.diff:          let jsonOK o = JsonConvert.SerializeObject(o) |> OK
       
           /// The getShell API call
  -        let getShell _ = OK <| newShell()
  +        let getShell r = 
  +            required r "shellId" (fun shellId ->
  +                OK <| newShell(shellId)
  +            )
   
           /// The evaluate API call
           let evaluate(c: HttpContext) = 
  
positive.code:         shell
  
      /// Creates a new shell with the specified id
      let internal newShell() = 
          let shellId = Guid.NewGuid().ToString()
          shells.Add(shellId, ConsoleKernelClient.StartNewProcess())
          shellId
  
      /// Starts the server on the specified port
      let start port =
  
negative.code:                     url "/fsharp/resetEnvironment"  >>= OK "Not yet implemented"
                      url "/fsharp/setShellOptions"   >>= OK "Not yet implemented"
                  ]
                  NOT_FOUND "404"
              ]
  
          stdout.WriteLine("Successfully started server")
  