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