When I use the "backgroundassetes-debug" cmd to trigger the background download extension callback, I get a "Refused to start extension for because it has been running for too long" error except the first time. Since I'm in the testing phase, I want it to be successfully triggered multiple times by the test cmd. So how to solve this problem.

When I submit a task via the BADownloadManager.scheduleDownload API in my tests, I don't know when the task will be executed. It looks like I can only wait for the syscall. Is there any way to test this api with some test commands?