case go122.EvGoStatus, go122.EvGoStatusStack:
		// N.B. ordering.advance populates e.base.extra.
		s = goStateTransition(GoID(e.base.args[0]), GoState(e.base.extra(version.Go122)[0]), go122GoStatus2GoState[e.base.args[2]])
	default:
		panic(fmt.Sprintf("internal error: unexpected event type for StateTransition kind: %s", go122.EventString(e.base.typ)))
	}
	return s
}