type t = [ | `True| `False| `False_if_hidden_includes_supported
]include Container_key.S with type t := t
val compare : t -> t -> intval equal : t -> t -> boolval seeded_hash : int -> t -> intval sexp_of_t : t -> Sexplib0.Sexp.tval t_of_sexp : Sexplib0.Sexp.t -> t