package main

import (
	"fmt"
	"net"
)

type Foo interface {
	Bar()
}

func bar() {
	fmt.Println("bar")
}

func run(f Foo) {
	f.Bar()
}

type t struct {
	Bar func()
}

type t2 struct {
}

func (t t2) Bar() {
	bar()
}

func main() {
	run(t2{})
	var d net.Dialer
	d.Cancel
}