The Shutdown method is useful for waiting for the informer to be stopped when running unit tests:
kubernetes/code-generator@e4b7976
It is missing:
https://github.com/k8snetworkplumbingwg/multi-networkpolicy/blob/master/pkg/client/informers/externalversions/internalinterfaces/factory_interfaces.go#L34
I tried updating code-gen and regenerating, but it doesnt seem to work. Not sure why...