anchor.diff:      end.
   
   %% @doc Retrieve an object which is requested from gateway.
  -%%
   -spec(get(AddrId, Key, ReqId) ->
                {ok, #?METADATA{}, binary()} |
                {error, any()} when AddrId::integer(),
  
positive.code:                         true  ->
                              case lists:keyfind(Key, 2, Acc) of
                                  false ->
                                      ordsets:add_element(#?METADATA{key   = Key,
                                                                     dsize = -1}, Acc);
                                  _ ->
                                      Acc
  
negative.code: 
  
  %% @doc Remova an object (request from gateway)
  -spec(delete(Object, ReqId) ->
               ok | {error, any()} when Object::#?OBJECT{},
                                        ReqId::integer()|reference()).
  