super();
this.hosts = new CopyOnWriteArrayList<VirtualHost>();
this.clients = new ClientList(null);
this.servers = new ServerList(null, this);
this.realms = new CopyOnWriteArrayList<Realm>();
this.services = new ServiceList(getContext());
if (Engine.getInstance() != null) {
this.helper = new ComponentHelper(this);
this.defaultHost = new VirtualHost(getContext()
.createChildContext());