func VerifyHeaderKV(key string, values ...string) http.HandlerFunc {
	return VerifyHeader(http.Header{key: values})
}
func VerifyHeaderKV(key string, values ...string) http.HandlerFunc {
	return VerifyHeader(http.Header{key: values})
}
//VerifyHeaderKV returns a handler that verifies the request contains a header matching the passed in key and values
//(recall that a `http.Header` is a mapping from string (key) to []string (values))
//It is a convenience wrapper around `VerifyHeader` that allows you to avoid having to create an `http.Header` object.