return appServers;
  private ArrayList getAppServersFromExperiment() {    ArrayList appServers = new ArrayList();    HostComponent[] hosts = experiment.getHostComponents();    for (int i = 0; i < hosts.length; i++) {      String hostName = hosts[i].getShortName();      NodeComponent[] nodes = hosts[i].getNodes();      for (int j = 0; j < nodes.length; j++) {        NodeComponent nodeComponent = nodes[j];        Properties properties = getNodeMinusD(nodeComponent, hostName);        int remotePort = getAppServerPort(properties);        RemoteHost appServer = getAppServer(hostName, remotePort);        if (appServer != null)          appServers.add(appServer);      }    }    return appServers;  }