anchor.diff:              Owin.AppFunc mw.Invoke)
           |> appB.Use
   
  +#if NO_UINEXT
  +#else
   open WebSharper.UI.Next
  +#endif
   
   /// Utilities to work with Warp applications.
   [<Extension>]
  
positive.code:                     | None -> Seq.empty
                  Title = Title
              }
  
      /// Creates a JSON content.
      static member Json data =
  
negative.code:                 Title = Title
              }
  
  #if NO_UINEXT
  #else
      /// Creates an HTML page from an <html> element.
      static member Page (doc: Element) =
          Content.WithTemplate (Content.Template.FromHtmlElement doc) ignore
  