Util_twine.Lazy
type 'a t = 'a lazy_t
val to_twine : (Twine.Encode.t -> 'a -> Twine.Encode.immediate) -> 'b lazy_t Twine.Encode.encoder
val of_twine : (Twine.Decode.t -> int -> 'a) -> 'b lazy_t Twine.Decode.decoder