external set_autosync : t -> bool -> unit = "ocaml_guestfs_set_autosync"
external get_autosync : t -> bool = "ocaml_guestfs_get_autosync"
external set_verbose : t -> bool -> unit = "ocaml_guestfs_set_verbose"
external set_autosync : t -> bool -> unit = "ocaml_guestfs_set_autosync"
external get_autosync : t -> bool = "ocaml_guestfs_get_autosync"
external set_verbose : t -> bool -> unit = "ocaml_guestfs_set_verbose"