anchor.diff:                                 nodes = Nodes}}
       end;
   first_fun(_) ->
  +    error_logger:warning_msg("~p,~p,~p,~p~n",
  +                             [{module, ?MODULE_STRING}, {function, "first_fun/1"},
  +                              {line, ?LINE}, {body, "not_found"}]),
       not_found.
   
   
  
positive.code: 
  
  find_redundancies_by_addr_id_1([],_AddrId) ->
      not_found;
  find_redundancies_by_addr_id_1(
    [#vnodeid_nodes{vnode_id_from = From,
  
negative.code: -spec(lookup_fun(list(#ring_group{}), pos_integer(), pos_integer(), pos_integer()) ->
               not_found | {ok, #redundancies{}}).
  lookup_fun([],_FirstVNodeId,_LastVNodeId,_AddrId) ->
      error_logger:warning_msg("~p,~p,~p,~p~n",
                               [{module, ?MODULE_STRING}, {function, "lookup_fun/4"},
                                {line, ?LINE}, {body, "not_found"}]),
      not_found;
  lookup_fun(RingGroupList, FirstVNodeId,_LastVNodeId, AddrId) when FirstVNodeId >= AddrId ->
      Ret = first_fun(RingGroupList),
  