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: hozlucas28.go
    path of file: ./repos/roadmap-retos-programacion/Roadmap/03 - ESTRUCTURAS DE DATOS/go
    
    the code of the file until where you have to start completion: package main

import (
	"errors"
	"fmt"
	"regexp"
	"strings"
)

type Product struct {
	name  string
	price float32
}

type Form interface {
	Area() float64
	Perimeter() float64
}

type Contact struc
    
func findContactIndex(name *string, contacts *[]Contact) (int, error) {
	for i := 0; i < len(*contacts); i++ {
		if strings.ToUpper((*contacts)[i].name) == strings.ToUpper(*name) {
			return i, nil
		}
	}

	return -1, errors.New("The contact doesn't exists")
}