Frama-C API - Env
val create : unit -> t
val clear : t -> unit
val used : t -> string -> bool
val fresh : t -> sanitizer:('a -> string) -> ?suggest:bool -> 'a -> string
val define : t -> string -> Lang.F.term -> unit
val unfold : t -> Lang.F.term -> unit
val set_indexed_vars : t -> unit
val iter : (string -> Lang.F.term -> unit) -> t -> unit