module Deriving_Default:sig
..end
module type Default =sig
..end
module Defaults:
module Default_string:Default
with type a = string
module Default_int64:Default
with type a = int64
module Default_int:Default
with type a = int
module Default_bool:Default
with type a = bool
module Default_unit:Default
with type a = unit
module Default_char:Default
with type a = char
module Default_float:Default
with type a = float
module Default_list:
module Default_option:
module Default_array:
module Default_ref: