anchor.diff:              x.WriteAsync (environment, buffer, 0, buffer.Length, cancel)
   
           [<Extension>]
  -        static member inline WriteAsync (environment, text) = 
  +        static member WriteAsync (environment, text) = 
               if environment = null then invalidArg "environment" "environment is required"
               if text = null then invalidArg "text" "text is required"
   
  
positive.code:                     | body -> body.WriteAsync(buffer, offset, count, cancel)
  
          [<Extension>]
          static member inline WriteAsync (environment, (text:string), (encoding:Encoding), cancel) =
              if environment = null then invalidArg "environment" "environment is required"
              if text = null then invalidArg "text" "text is required"
              if encoding = null then invalidArg "encoding" "encoding is required"
  
negative.code:                 parse formText |> populateDictionary
  
      [<Extension>]
      [<AbstractClass; Sealed>]
      type x() =
  
          [<Extension>]
          static member Get<'a> (environment:Environment, key) =
              match environment.TryGetValue(key) with
                  | true, value -> value :?> 'a
                  | _, _ -> Unchecked.defaultof<'a>
  
          [<Extension>]
          static member GetCallCancelled (environment) =
              x.Get<CancellationToken> (environment, CallCancelledKey)
  
          [<Extension>]
          static member GetMethod (environment) =
              x.Get<string> (environment, RequestMethodKey)
  
          [<Extension>]
          static member GetPath (environment) =
              x.Get<string> (environment, RequestPathKey)
  
          [<Extension>]
          static member GetRequestHeaders (environment) = 
              x.Get<Headers> (environment, RequestHeadersKey)
  
          [<Extension>]
          static member GetResponseBody (environment) =
              x.Get<Stream> (environment, ResponseBodyKey)
  
          [<Extension>]
          static member GetResponseHeaders (environment) =
              x.Get<Headers> (environment, ResponseHeadersKey)
  
          [<Extension>]
          static member ReadFormAsync (environment) : Task<Form> =
  
              let form = x.Get<Form> (environment, RequestFormKey)
  
              let createForm =
                  async {
  