anchor.diff:  
       let recyclableMemoryStreamManager = RecyclableMemoryStreamManager()
   
  -    /// **Description**
  -    ///
  -    /// Interface defining JSON serialization methods. Use this interface to customize JSON serialization in Giraffe.
  -    ///
  +    /// <summary>
  +    ///  Interface defining JSON serialization methods. Use this interface to customize JSON serialization in Giraffe.
  +    /// </summary>
       [<AllowNullLiteral>]
       type IJsonSerializer =
           abstract member SerializeToString<'T>      : 'T -> string
  
positive.code:         abstract member Deserialize<'T>      : byte[] -> 'T
          abstract member DeserializeAsync<'T> : Stream -> Task<'T>
  
      /// **Description**
      ///
      /// `Utf8JsonSerializer` is an alternative serializer with 
      /// great performance and supports true chunked transfer encoding.
      ///
      /// It uses `Utf8Json` as the underlying JSON serializer to (de-)serialize
      /// JSON content. [Utf8Json](https://github.com/neuecc/Utf8Json) is currently
      /// the fastest JSON serializer for .NET.
      ///
      type Utf8JsonSerializer (resolver : IJsonFormatterResolver) =
  
          static member DefaultResolver = Utf8Json.Resolvers.StandardResolver.CamelCase
  
negative.code: 
      open System.Text.Json
  
      /// <summary>
      ///
      /// <see cref="SystemTextJsonSerializer" /> is an alternaive <see cref="IJsonSerializer"/> in Giraffe.
      ///
      /// It uses <see cref="System.Text.Json"/> as the underlying JSON serializer to (de-)serialize
      /// JSON content. For support of F# unions and records, look at https://github.com/Tarmil/FSharp.SystemTextJson
      /// which plugs into this serializer.
      /// </summary>
      type SystemTextJsonSerializer (options: JsonSerializerOptions) =
  
          static member DefaultOptions =
  