anchor.diff:  	 hello_world/1,
   	 hello_world/2,
   	 get_tuple/1,
  -	 get_tuple/2,
  +	 'GetTuple'/3,
   	 get_dict/1,
  -	 get_dict/2
  +	 'GetDict'/3
   	]).
   
   %% gen_dbus callbacks
  
positive.code: -module(hello).
  
  -import(error_logger).
  -import(dberl.gen_dbus).
  
negative.code:      {signature, [string], [{array, string}]}].
      
  
  'HelloWorld'([Id, Hello_message], From, State) when is_integer(Id) ->
  %%     {dbus_error, 'org.freedesktop.DBus.Error.InvalidArgs', "Invalid args", State}.
  
      self() ! {hello, [Id, Hello_message], From},
      {noreply, State}.
  
  %%     io:format("HelloWorld: ~p, ~p~n", [Id, Hello_message]),
  %% %%     on_click(17, 123),
  