anchor.diff:      isUnix
   #endif
   
  -let encodeURL (url:string) = url.Replace("+","%2B")
  -
  -
   let monoPath =
       if isMacOS && File.Exists "/Library/Frameworks/Mono.framework/Commands/mono" then
           "/Library/Frameworks/Mono.framework/Commands/mono"
  
positive.code: let getFromUrl (auth:Auth option, url : string, contentType : string) =
      async { 
          try
              let url = encodeURL url
              use client = createWebClient(url,auth)
              if notNullOrEmpty contentType then
                  addAcceptHeader client contentType
  
negative.code: 
  #else
  
  type System.Net.WebClient with
      member x.UploadFileAsMultipart (url : Uri) filename = 
          let fileTemplate = 
  