sessions = new ConcurrentReaderHashMap();
   public ServerPeer(int serverPeerID,                     String defaultQueueJNDIContext,                     String defaultTopicJNDIContext) throws Exception   {      this.serverPeerID = serverPeerID;      this.defaultQueueJNDIContext = defaultQueueJNDIContext;      this.defaultTopicJNDIContext = defaultTopicJNDIContext;      // Some wired components need to be started here      securityStore = new SecurityMetadataStore();      version = Version.instance();            failoverStatusLock = new Object();      started = false;   }