Akka used by Groovy++

@Typed package org.mbte.akkatest

import se.scalablesolutions.akka.actor.*
import java.util.concurrent.TimeUnit
import java.util.concurrent.CountDownLatch
import se.scalablesolutions.akka.config.JavaConfig.AllForOne
import se.scalablesolutions.akka.config.JavaConfig.RestartStrategy
import se.scalablesolutions.akka.config.ScalaConfig.Server

class Akka {
  static ActorRef actor(Function1 handler) {
    UntypedActor.actorOf{{ msg -> handler(msg) }}
  }

  static ActorRef leftShift(ActorRef ref, msg) {
    ref.sendOneWay msg
    ref
  }

  static Supervisor leftShift(Supervisor supervisor, ActorRef ref) {
    supervisor.link ref
    supervisor
  }

  static Supervisor supervisor(RestartStrategy restart, Server [] servers) {
    SupervisorFactory.apply([restart.transform(), scala.collection.immutable.List.fromIterator(scala.collection.JavaConversions.asIterator(servers.toList().iterator()))]).newInstance()
  }
}

def start = System.currentTimeMillis()
def supervisor = Akka.supervisor([new AllForOne(), 3, 5000])

ActorRef prev
int nMessages = 500
int nActors = 10000
CountDownLatch cdl = [nActors*nMessages]
for (i in 0..<nActors) {
    prev = Akka.actor{ o ->
        if(prev)
          prev << o
        cdl.countDown()
      }.start()

  supervisor << prev
}
for(i in 0..<nMessages)
    prev << "Hi"

assert cdl.await(60,TimeUnit.SECONDS)
supervisor.shutdown()

println("${System.currentTimeMillis()-start}")

Is there a groovy version?