Hi, there

I noticed there are three state about the app event, started, stopped and
buildpack_set.

what does "buildpack_set" mean? If the app is in buildpack_set status, does
it occupy cup/memory/disk?

If the app is deleted, will the event reflected in app_usage_events? if no,
should I use /v2/app_usage_events together with
/v2/events?q=type:audit.app.delete-request to determine the lifetime of an
app?

Many thanks.