You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: spawn.go
    path of file: ./repos/delve/_fixtures
    
    the code of the file until where you have to start completion: package main

import (
	"fmt"
	"os"
	"os/exec"
	"strconv"
	"time"
)

func traceme1() {
	fmt.Printf("parent starting\n")
}

func traceme2(n string) {
	fmt.Printf("hello from %s\n", n)
}

func traceme3() {
	fmt.Printf("done\n")
}

func main() {
	exe, _ := os.Executable()
	switch
    
func main() {
	exe, _ := os.Executable()
	switch os.Args[1] {
	case "spawn":
		traceme1()
		n, _ := strconv.Atoi(os.Args[2])
		cmds := []*exec.Cmd{}
		for i := 0; i < n; i++ {
			cmd := exec.Command(exe, "child", fmt.Sprintf("C%d", i))
			cmd.Stdout = os.Stdout
			cmd.Start()
			cmds = append(cmds, cmd)
		}

		for _, cmd := range cmds {
			cmd.Wait()
		}

		time.Sleep(1 * time.Second)
		traceme3()

	case "child":
		traceme2(os.Args[2])

	}
}