type t =| Could_not_construct of Sexp.t| String of string| Exn of exn| Sexp of Sexp.t| Tag_sexp of string * Sexp.t * Caml.Lexing.position option| Tag_t of string * t| Tag_arg of string * Sexp.t * t| Of_list of int option * t list| With_backtrace of t * stringThe second argument is the backtrace
The internal representation. It is exposed so that we can write efficient serializers outside of this module.