Man pages matching name anyevent::forkobject in section 3pm:

AnyEvent::ForkObject.3pm.en	debian 10 / libanyevent-forkobject-perl
AnyEvent::ForkObject.3pm.en	debian 11 / libanyevent-forkobject-perl
AnyEvent::ForkObject.3pm.en	debian 12 / libanyevent-forkobject-perl