when:
        proxy.doStuff('param')

        then:
        IllegalStateException e = thrown()
        e.message == 'This actor has been stopped.'
    }

    def cannotDispatchToNonBlockingActorAfterItHasBeenStopped() {
        def actor = factory.createActor(target)
        def proxy = actor.getProxy(TargetObject.class)

        given:
        actor.stop()

        when: