func VerifyFormKV(key string, values ...string) http.HandlerFunc {
	return VerifyForm(url.Values{key: values})
}
func VerifyFormKV(key string, values ...string) http.HandlerFunc {
	return VerifyForm(url.Values{key: values})
}
//VerifyFormKV returns a handler that verifies a request contains a form key with the specified values.
//
//It is a convenience wrapper around `VerifyForm` that lets you avoid having to create a `url.Values` object.