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: max_depth.go
    path of file: ./repos/colly/_examples/max_depth
    
    the code of the file until where you have to start completion: package main

import (
	"fmt"

	"github.com/goco
    
func main() {
	// Instantiate default collector
	c := colly.NewCollector(
		// MaxDepth is 1, so only the links on the scraped page
		// is visited, and no further links are followed
		colly.MaxDepth(1),
	)

	// On every a element which has href attribute call callback
	c.OnHTML("a[href]", func(e *colly.HTMLElement) {
		link := e.Attr("href")
		// Print link
		fmt.Println(link)
		// Visit link found on page
		e.Request.Visit(link)
	})

	// Start scraping on https://en.wikipedia.org
	c.Visit("https://en.wikipedia.org/")
}