anchor.diff:      //  Exception Definitions
       //
   
  -    /// the base Pickler exception
       type FsPicklerException =
           inherit Exception
   
  
positive.code: 
          internal new (si : SerializationInfo, sc : StreamingContext) =
              { inherit FsPicklerException(si, sc) }
  
      type InvalidPickleTypeException =
          inherit FsPicklerException
  
  
negative.code:         internal new (si : SerializationInfo, sc : StreamingContext) =
              { inherit Exception(si, sc) }
  
      /// Raised when pickle is of invalid format
      type InvalidPickleException =
          inherit FsPicklerException
  
  