anchor.diff:  
   list_bounded(#state{proxy=Backend}=State, Node, Opts) ->
       Cid = occi_node:objid(Node),
  -	Filters = [],
  +    Filters = [],
       case dbus_proxy:call(Backend, ?IFACE_BACKEND, <<"List">>, [occi_cid:to_binary(Cid), Filters]) of
           {ok, {ColId, Serial}} ->
               ?debug("Set collection id: ~p", [ColId]),
               Res = #occi_node{id=occi_node:id(Node), objid=ColId, etag=Serial, type=occi_collection, 
  -							 data=occi_collection:new(Cid)},
  +                             data=occi_collection:new(Cid)},
               next(State, Res, Opts);
           {error, Err} ->
               {{error, Err}, State}
  
positive.code: 
  find_unbounded(#state{proxy=Backend}=State, Node) ->
      Id = occi_node:objid(Node),
  	Filters = [],
      case dbus_proxy:call(Backend, ?IFACE_BACKEND, <<"List">>, [occi_uri:to_binary(Id), Filters]) of
          {ok, {ColId, Serial}} ->
              ?debug("Set collection id: ~p", [ColId]),
  
negative.code:         _ ->
              Id = occi_node:objid(Node),
              case dbus_proxy:call(Backend, ?IFACE_BACKEND, <<"Load">>, [Id]) of
                  {ok, {_Id, Kind, Mixins, Attributes}} ->
                      Entity = occi_entity:new(occi_node:id(Node), Kind, Mixins, cast_attributes(Attributes)),
                      {{ok, occi_node:data(Node, Entity)}, State};
                  {error, Err} ->
                      {{error, Err}, State}
  