class in UnityEditor.PackageManager.Requests
/
继承自：PackageManager.Requests.Request_1
表示关于向项目添加包的异步请求。
The PackageManager Client class returns an AddRequest instance when you call the Client.Add method to add a package to your project. Use this object to determine when the request is complete and to access the result, which is a PackageInfo instance.
| Error | 请求返回的错误（如果有）。 |
| IsCompleted | 请求是否已完成。 |
| Status | 请求状态。 |
| Result | 对请求的响应。 |