Sexp.Privateval size : Sexplib0.Sexp.t -> int * intval buffer : unit -> Buffer.tval to_buffer : buf:Buffer.t -> Sexplib0.Sexp.t -> unitval to_buffer_hum : buf:Buffer.t -> ?indent:int -> Sexplib0.Sexp.t -> unitval to_buffer_mach : buf:Buffer.t -> Sexplib0.Sexp.t -> unitval to_buffer_gen : 
  buf:'buffer ->
  add_char:('buffer -> char -> unit) ->
  add_string:('buffer -> string -> unit) ->
  Sexplib0.Sexp.t ->
  unit