proxy for the contents of a file in the file-system
include sig ... end
val sexp_of_t : t ‑> Base.Sexp.t
val hash_fold_t : Base.Hash.state ‑> t ‑> Base.Hash.state
val hash : t ‑> Base.Hash.hash_value
val intern : Core.Md5.t ‑> t
module With_store : sig ... end