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: fake.go
    path of file: ./repos/plumber/vendor/github.com/maxbrunsfeld/counterfeiter/v6/generator
    
    the code of the file until where you have to start completion: package generator

import (
	"bytes"
	"errors"
	"go/types"
	"log"
	"strings"
	"text/template"
	"unicode"
	"unicode/utf8"

	"golang.org/x/tools/go/packages"
	"golang.org/x/tools/imports"
)

// FakeMode indicates the type of Fake to generate.
type FakeMode int

// FakeMode can be Interface, Function, or Package.
const (
	InterfaceOrFunction FakeMode = iota
	Package
)

// Fake is used to generate a Fake implementation of an interface.
type Fake struct {
	Packages           []*packages.Package
	Package            *packages.Package
	Target             *types.TypeName
	Mode               FakeMode
	DestinationPackage string
	Name               string
	TargetAlias        string
	TargetName         string
	TargetPackage      string
	Imports            Imports
	Methods            []Method
	Function           Method
	Header             string
}

// Method is a method of the interface.
    
func (f *Fake) Generate(runImports bool) ([]byte, error) {
	var tmpl *template.Template
	if f.IsInterface() {
		log.Printf("Writing fake %s for interface %s to package %s\n", f.Name, f.TargetName, f.DestinationPackage)
		tmpl = template.Must(template.New("fake").Funcs(interfaceFuncs).Parse(interfaceTemplate))
	}
	if f.IsFunction() {
		log.Printf("Writing fake %s for function %s to package %s\n", f.Name, f.TargetName, f.DestinationPackage)
		tmpl = template.Must(template.New("fake").Funcs(functionFuncs).Parse(functionTemplate))
	}
	if f.Mode == Package {
		log.Printf("Writing fake %s for package %s to package %s\n", f.Name, f.TargetPackage, f.DestinationPackage)
		tmpl = template.Must(template.New("fake").Funcs(packageFuncs).Parse(packageTemplate))
	}
	if tmpl == nil {
		return nil, errors.New("counterfeiter can only generate fakes for interfaces or specific functions")
	}

	b := &bytes.Buffer{}
	tmpl.Execute(b, f)
	if runImports {
		return imports.Process("counterfeiter_temp_process_file", b.Bytes(), nil)
	}
	return b.Bytes(), nil
}