anchor.diff:  -export([
   	 start_link/0,
   	 get_bus/1,
  +	 release_bus/1,
   	 export_service/2,
   	 unexport_service/2,
   	 set_service_reg/1,
  
positive.code: 	    {ok, Bus} = dbus_bus:connect(BusId),
  	    Busses1 = [{BusId, Bus} | Busses],
  	    {reply, {ok, Bus}, State#state{busses=Busses1}}
      end;
  
  handle_call({export_service, _Service, ServiceName}, _From, State) ->
  
negative.code: 
  get_bus(BusId) when is_record(BusId, bus_id) ->
      gen_server:call(?SERVER, {get_bus, BusId}).
  
  release_bus(Bus) when is_pid(Bus) ->
      gen_server:call(?SERVER, {release_bus, Bus}).
  
  %%     case R of
  %% 	{ok, Pid} ->
  %% 	    link(Pid);
  