_examples/router-walk/main.go
func Ping(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte("pong"))
}
func Ping(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte("pong"))
}
func Ping ( w http . ResponseWriter , r * http . Request ) { w . Write ( [ ] byte ( " " ) ) }
// Ping returns pong
Ping returns pong