Module type Fix.IMPERATIVE_MAPS

include MINIMAL_IMPERATIVE_MAPS
type key
type 'data t
val create : unit -> 'data t
val add : key -> 'data -> 'data t -> unit
val find : key -> 'data t -> 'data
val clear : 'data t -> unit
val iter : (key -> 'data -> unit) -> 'data t -> unit