Actors.actor {
    println "actor1 has started"
    delegate.metaClass {
        afterStop = {List undeliveredMessages ->
            println "actor1 has stopped"
        }
        onInterrupt = {InterruptedException e ->
            println "actor1 has been interrupted"
        }
        onTimeout = {->
            println "actor1 has timed out"
        }
        onException = {Exception e ->
            println "actor1 threw an exception"
        }
    }
    println("Running actor1")
    …
}

class PooledLifeCycleSampleActor extends DefaultActor {
    protected void act() {
        println("Running actor2")
        …
    }
    private void afterStart() {
        println "actor2 has started"
    }
    private void afterStop(List undeliveredMessages) {
        println "actor2 has stopped"
    }
    private void onInterrupt(InterruptedException e) {
        println "actor2 has been interrupted"
    }
    private void onTimeout() {
        println "actor2 has timed out"
    }
    private void onException(Exception e) {
        println "actor2 threw an exception"
    }
}