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: inspector_test.go
    path of file: ./repos/gitkube/vendor/golang.org/x/tools/go/ast/inspector
    
    the code of the file until where you have to start completion: package inspector_test

import (
	"go/ast"
	"go/build"
	"go/parser"
	"go/token"
	"log"
	"path/filepath"
	"reflect"
	"strings"
	"testing"

	"golang.org/x/tools/go/ast/inspector"
)

var netFiles []*ast.File

func init() {
	files, err := parseNetFiles()
	if err != nil {
		log.Fatal(err)
	}
	netFiles = files
}

func parseNetFiles() ([]*ast.File, error) {
	pkg
    
func parseNetFiles() ([]*ast.File, error) {
	pkg, err := build.Default.Import("net", "", 0)
	if err != nil {
		return nil, err
	}
	fset := token.NewFileSet()
	var files []*ast.File
	for _, filename := range pkg.GoFiles {
		filename = filepath.Join(pkg.Dir, filename)
		f, err := parser.ParseFile(fset, filename, nil, 0)
		if err != nil {
			return nil, err
		}
		files = append(files, f)
	}
	return files, nil
}