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.
Once the request is complete, you can retrieve the PackageInfo instance from the Result property.
| 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。 |