code: public ActiveTunnel[] getX11ForwardingTunnels() throws IOException {
  		if (incomingtunnels.containsKey(X11_KEY)) {
  			Vector<ActiveTunnel> v = incomingtunnels.get(X11_KEY);
  			ActiveTunnel[] t = new ActiveTunnel[v.size()];
  			v.copyInto(t);
  
  			return t;
  		}
  		return new ActiveTunnel[] {};
  	}
docs: Get the active X11 forwarding channels.
  
  @return ActiveTunnel[]
  @throws IOException