如何在GoLang中覆盖组合的struct方法

structServeHTTP405ServeHTTPGet(w http.ResponseWriter, r *http.Request)ServeHTTP

package main

import "net/http"

type Controller struct { }

func notAllowed(w http.ResponseWriter){
    w.WriteHeader(http.StatusMethodNotAllowed)
    w.Write([]byte("405- Method Not Allowed"))
}
func(c Controller)  Get(w http.ResponseWriter, r *http.Request){
    notAllowed(w)
}
func(c Controller)  Post(w http.ResponseWriter, r *http.Request){
    notAllowed(w)   
}
func(c Controller)  Put(w http.ResponseWriter, r *http.Request){
    notAllowed(w)   
}
func(c Controller)  Patch(w http.ResponseWriter, r *http.Request){
    notAllowed(w)   
}
func(c Controller)  Delete(w http.ResponseWriter, r *http.Request){
    notAllowed(w)   
}
func(c Controller)  ServeHTTP(w http.ResponseWriter, r *http.Request){
    switch r.Method {
        case "GET":
            c.Get(w, r)
        case "POST":
            c.Post(w, r)
        case "PUT":
            c.Put(w, r)
        case "PATCH":
            c.Patch(w, r)
        case "DELETE":
            c.Delete(w, r)
    }
}
type Index struct {
  Controller  
}
func(I Index) Get(w http.ResponseWriter, r http.Request){
  w.Write([]byte("hello"))
}
func main(){
  http.Handle("/", Index{})
  http.ListenAndServe(":8080", nil)
}