How to get special app folder with the new SDK?

I am pulling my hair out trying to upload to special app folder https://docs.microsoft.com/en-us/onedrive/developer/rest-api/api/drive_get_specialfolder?view=odsp-graph-online

On 5 series, I was simply doing

val specialAppFolder = "approot" val uploadSession = graphServiceClient .me() .drive() .special(specialAppFolder) .itemWithPath(uploadDestination.removePrefix("/")) // removePrefix because OrganiserConverter.fromConfig will return /path/.. .createUploadSession(.....)

On 6+ I cannot figure-out how to get hold of specialAppFolder in order to createUploadSession().

Could someone with a better understanding point me to the right direction please?

该 issue 引用了 Microsoft Graph 关于特殊文件夹的文档，并展示了 v5 Java 调用链；先将该示例与 v6+ Java SDK 的 API 表面进行比较。确定 approot 文件夹在较新 SDK 中的表示方式，并确认 upload-session 的使用方式，然后记录由此得出的指导。