patree.go
func (f HandlerFunc) ServeHTTPContext(w http.ResponseWriter, r *http.Request, c *Context) {
	f(w, r, c)
}
func (f HandlerFunc) ServeHTTPContext(w http.ResponseWriter, r *http.Request, c *Context) {
	f(w, r, c)
}
// ServeHTTPContext calls f(w, r, c)