anchor.diff:  [<EntryPoint>]
   let main argv = 
     startWebServer defaultConfig api1.App
  -  0 // return an integer exit code
  +  0 // return an integer exit codexit code
   
   (**
   
  
positive.code:       return! MODEL DateTime.Now x
      }
  
  (**
  
  Using DSL:
  
  *)
  
  let api1 = 
    swagger {
      // syntax 1
  
negative.code:     async {
        return! OK (DateTime.Now.ToString()) x
      }
  [<EntryPoint>]
  let main argv = 
    let time1 = GET >=> path "/time1" >=> now1
    startWebServer defaultConfig time1
    0 // return an integer exit code
  