when:
        def actor = factory.createActor(target)

        then:
        actor instanceof ThreadSafe
        actor.getProxy(Runnable) instanceof ThreadSafe
    }

    def createsABlockingActorForATargetObject() {
        when:
        def actor = factory.createBlockingActor(target)

        then:
        actor != null
    }

    def cachesTheBlockingActorForATargetObject() {
        when: