goanna/request.go
func (r *Request) UrlValue(key string) string {
	return mux.Vars(r.Request)[key]
}
func (r *Request) UrlValue(key string) string {
	return mux.Vars(r.Request)[key]
}
func ( r * Request ) UrlValue ( key string ) string { return mux . Vars ( r . Request ) [ key ] }
// UrlValue returns whether the request is PATCH
UrlValue returns whether the request is PATCH