+ (** helpers *)
+
+ (** remove all bindings of a given key from an hash table *)
+val hashtbl_remove_all: ('a, 'b) Hashtbl.t -> 'a -> unit
+
+ (** follows cut and paste from zack's Http_client_smart module *)
+
+ (** can't parse an HTTP url *)
+exception Malformed_URL of string
+ (** can't parse an HTTP response *)
+exception Malformed_HTTP_response of string
+
+ (** HTTP GET request for a given url, return http response's body *)