val size : t -> int * intval to_buffer_hum : buf:Buffer.t -> ?indent:int -> t -> unitval to_buffer_mach : buf:Buffer.t -> t -> unitval to_buffer_gen : 
  buf:'buffer ->
  add_char:('buffer -> char -> unit) ->
  add_string:('buffer -> string -> unit) ->
  t ->
  unitval mach_maybe_esc_str : string -> stringval must_escape : string -> boolval esc_str : string -> string