// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import "./a"

func main() {
	obj := a.NewWrapperWithLock("this file does import sync")
	obj.PrintWithLock()

// license that can be found in the LICENSE file.

package a

import (
	"fmt"
	"sync"
)

type WrapperWithLock[T any] interface {
	PrintWithLock()
}

func NewWrapperWithLock[T any](value T) WrapperWithLock[T] {
	return &wrapperWithLock[T]{
		Object: value,
	}
}

type wrapperWithLock[T any] struct {
	Lock   sync.Mutex
	Object T
}