code: @Test public void test(){
    final String clusterName="helloWorldTestCluster." + System.currentTimeMillis();
    OrbitStage stage1=initStage(clusterName,"stage1");
    OrbitStage stage2=initStage(clusterName,"stage2");
    System.out.println("Stages initialized");
    IHello helloFrom1=stage1.getReference(IHello.class,"0");
    IHello helloFrom2=stage2.getReference(IHello.class,"0");
    System.out.println(helloFrom1.sayHello("Hi from 01").join());
    System.out.println(helloFrom2.sayHello("Hi from 02").join());
  }
  