anchor.diff:  
   %% @doc Remove an Endpoint from the manager
   %% @private
  --spec(delete_endpoint(binary(), binary()) ->
  -             ok | {error, any()}).
  -delete_endpoint(_CmdBody, Option) ->
  +-spec(delete_endpoint(binary()) ->
  +             ok | {error, any()}).
  +delete_endpoint(Option) ->
       case ?get_tokens(Option, ?ERROR_INVALID_ARGS) of
           {ok, [EndPoint|_]} ->
               EndPointBin = list_to_binary(EndPoint),
  
positive.code: 
  %% @doc Compact target node of objects into the object-storages
  %% @private
  -spec(compact(binary(), binary()) ->
               ok | {ok,_} | {error, any()}).
  compact(_CmdBody, Option) ->
      case ?get_tokens(Option, ?ERROR_NO_CMODE_SPECIFIED) of
          {ok, [Mode, Node|Rest]} ->
              %% command patterns:
  
negative.code: 
  %% @doc Exec login
  %% @private
  -spec(login(binary()) ->
               {ok, #?S3_USER{}, [tuple()]} | {error, any()}).
  login(Option) ->
      case ?get_tokens(Option, invalid_args) of
          {ok, [UserId, Password]} ->
              UserIdBin = list_to_binary(UserId),
  