Why do some Delete interfaces in FakeControl not clean up resources in cache.Indexer?

[happy-v587]

Question

In FakePodControl, the delete function will call c.PodIndexer.Delete(pod)

• pod_control.go#L356

But in FakeStatefulSetControl or FakeJobControl are not call Indexer.Delete

• job_control.go#L158
• stateful_set_control.go#L233

why？