public ThreadGroupReferenceProxyImpl getThreadGroupReferenceProxy(ThreadGroupReference group) {
    DebuggerManagerThreadImpl.assertIsManagerThread();
    if (group == null) {
      return null;
    }

    ThreadGroupReferenceProxyImpl proxy = myThreadGroups.get(group);
    if (proxy == null) {
      if (!isJ2ME()) {
        proxy = new ThreadGroupReferenceProxyImpl(this, group);
        myThreadGroups.put(group, proxy);
      }
    }

    return proxy;
  }
public ThreadGroupReferenceProxyImpl getThreadGroupReferenceProxy(ThreadGroupReference group)