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: introduction.go
    path of file: ./repos/tview/demos/presentation
    
    the code of the file until where you have to start completion: package main

import "github.com/rivo/tview"

// Introduction returns a tview.
    
func Introduction(nextSlide func()) (title string, content tview.Primitive) {
	list := tview.NewList().
		AddItem("A Go package for terminal based UIs", "with a special focus on rich interactive widgets", '1', nextSlide).
		AddItem("Based on github.com/gdamore/tcell", "Like termbox but better (see tcell docs)", '2', nextSlide).
		AddItem("Designed to be simple", `"Hello world" is 5 lines of code`, '3', nextSlide).
		AddItem("Good for data entry", `For charts, use "termui" - for low-level views, use "gocui" - ...`, '4', nextSlide).
		AddItem("Extensive documentation", "Everything is documented, examples in GitHub wiki, demo code for each widget", '5', nextSlide)
	return "Introduction", Center(80, 10, list)
}