web/server.go
func (mux *LoggingServeMux) Handler(r *http.Request) (h http.Handler, pattern string) {
	return mux.serveMux.Handler(r)
}
func (mux *LoggingServeMux) Handler(r *http.Request) (h http.Handler, pattern string) {
	return mux.serveMux.Handler(r)
}
// Handler sastisfy interface