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: DarcoProgramador.go
    path of file: ./repos/retos-programacion-2023/Retos/Reto #4 - PRIMO, FIBONACCI Y PAR [Media]/go
    
    the code of the file until where you have to start completion: package main

import (
	"fmt"
	"math"
	"sync"
)

/*
 * Escribe un programa que, dado un número, compruebe y muestre si e
    
func ComprobacionPFI(num int) string {

	var primo string
	var fibonacci string
	var par string

	var wg sync.WaitGroup
	wg.Add(3)
	go esPrimo(num, &primo, &wg)
	go esFibonacci(num, &fibonacci, &wg)
	go esImpar(num, &par, &wg)
	wg.Wait()

	return fmt.Sprintf("%d %s, %s y %s", num, primo, fibonacci, par)
}