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: game.go
    path of file: ./repos/corteza/server/vendor/github.com/brianvoe/gofakeit/v6
    
    the code of the file until where you have to start completion: package gofakeit

import (
	"fmt"
	"math/rand"
	"strings"
)

// Gamertag will generate a random video game username
func Gamertag() string { return gamertag(globalFaker.Rand) }

// Gamertag will generate a random video game username
func (f *Faker) Gamertag() string { return gamertag(f.Rand) }

func gamertag(r
    
func addGameLookup() {
	AddFuncLookup("gamertag", Info{
		Display:     "Gamertag",
		Category:    "game",
		Description: "Random gamertag",
		Example:     "footinterpret63",
		Output:      "string",
		Generate: func(r *rand.Rand, m *MapParams, info *Info) (interface{}, error) {
			return gamertag(r), nil
		},
	})

	AddFuncLookup("dice", Info{
		Display:     "Dice",
		Category:    "game",
		Description: "Random dice outputs",
		Example:     "footinterpret63",
		Output:      "[]uint",
		Params: []Param{
			{Field: "numdice", Display: "Number of Dice", Type: "uint", Default: "1", Description: "Number of dice to roll"},
			{Field: "sides", Display: "Number of Sides", Type: "[]uint", Default: "[6]", Description: "Number of sides on each dice"},
		},
		Generate: func(r *rand.Rand, m *MapParams, info *Info) (interface{}, error) {
			numDice, err := info.GetUint(m, "numdice")
			if err != nil {
				return nil, err
			}

			sides, err := info.GetUintArray(m, "sides")
			if err != nil {
				return nil, err
			}

			return dice(r, numDice, sides), nil
		},
	})
}