anchor.diff:  start_link(Bucket) ->
       gen_server:start_link({local, server(Bucket)}, ?MODULE, Bucket, []).
   
  -latest(Bucket) ->
  +latest(minute, Bucket) ->
       gen_server:call(server(Bucket), latest).
   
  -latest(Node, Bucket) when is_atom(Node), is_list(Bucket) ->
  +latest(minute, Node, Bucket) when is_atom(Node), is_list(Bucket) ->
       gen_server:call({server(Bucket), Node}, latest);
  -latest(Nodes, Bucket) when is_list(Bucket) ->
  +latest(minute, Nodes, Bucket) when is_list(Bucket) ->
       gen_server:multi_call(Nodes, server(Bucket), latest);
  -latest(Bucket, N) ->
  +latest(minute, Bucket, N) ->
       gen_server:call(server(Bucket), {latest, N}).
   
  -latest(Node, Bucket, N) when is_atom(Node) ->
  +latest(minute, Node, Bucket, N) when is_atom(Node) ->
       gen_server:call({server(Bucket), Node}, {latest, N});
  -latest(Nodes, Bucket, N) ->
  +latest(minute, Nodes, Bucket, N) ->
       gen_server:multi_call(Nodes, server(Bucket), {latest, N}).
   
  -latest_all(Bucket) ->
  +latest_all(minute, Bucket) ->
       gen_server:multi_call(server(Bucket), latest).
   
  -latest_all(Bucket, N) ->
  +latest_all(minute, Bucket, N) ->
       gen_server:multi_call(server(Bucket), {latest, N}).
   
   
  
positive.code: -record(state, {bucket, samples}).
  
  -export([start_link/1,
           latest/1, latest/2, latest/3,
           latest_all/1, latest_all/2]).
  
  -export([code_change/3, init/1, handle_call/3, handle_cast/2, handle_info/2,
           terminate/2]).
  
negative.code: 
  
  %% Internal functions
  
  server(Bucket) ->
      list_to_atom(?MODULE_STRING ++ "-" ++ Bucket).
  