code: @Override
      public Node start() {
          try {
              Node node = super.start();
              JMThread.sleep(1000);
              return node;
          } catch (NodeValidationException e) {
              return JMExceptionManager.handleExceptionAndThrowRuntimeEx(log, e,
                      "start");
          }
      }
docs: /*
  (non-Javadoc)
  
  @see org.elasticsearch.node.Node#start()