Go embedded example.

go-embedded.go

package main

import (
	"fmt"
)

type Pinger interface {
	Ping()
}

type Ponger interface {
	Pong()
}

type PingPonger struct {
	Pinger
	Ponger
}

func (p *PingPonger) Ping() {
	fmt.Println("Ping")
}

func Call(pinger Pinger) {
	pinger.Ping()
}

type PingPonger2 struct {
	PingPonger
}

func (p *PingPonger2) Ping() {
	fmt.Println("Ping2")
}

func main() {
	rw := &PingPonger2{}
	Call(rw)
}