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: example_test.go
    path of file: ./repos/leaf/recordfile
    
    the code of the file until where you have to start completion: package recordfile_test

import (
	"fmt"
	"github.com/name5566/leaf/recordfile"
)

func Example() {
	type Record struct {
		// index 0
		IndexInt int "index"
		// index 1
		IndexStr string "index"
		_Number  int32
		Str      string
		Arr1     [2]int
		Arr2     [3][2]int
		Arr3     []int
		St       struct {
			Name string "name"
			Num  int    "num"
		}
		M ma
    
func Example() {
	type Record struct {
		// index 0
		IndexInt int "index"
		// index 1
		IndexStr string "index"
		_Number  int32
		Str      string
		Arr1     [2]int
		Arr2     [3][2]int
		Arr3     []int
		St       struct {
			Name string "name"
			Num  int    "num"
		}
		M map[string]int
	}

	rf, err := recordfile.New(Record{})
	if err != nil {
		return
	}

	err = rf.Read("test.txt")
	if err != nil {
		return
	}

	for i := 0; i < rf.NumRecord(); i++ {
		r := rf.Record(i).(*Record)
		fmt.Println(r.IndexInt)
	}

	r := rf.Index(2).(*Record)
	fmt.Println(r.Str)

	r = rf.Indexes(0)[2].(*Record)
	fmt.Println(r.Str)

	r = rf.Indexes(1)["three"].(*Record)
	fmt.Println(r.Str)
	fmt.Println(r.Arr1[1])
	fmt.Println(r.Arr2[2][0])
	fmt.Println(r.Arr3[0])
	fmt.Println(r.St.Name)
	fmt.Println(r.M["key6"])

	// Output:
	// 1
	// 2
	// 3
	// cat
	// cat
	// book
	// 6
	// 4
	// 6
	// name5566
	// 6
}