anchor.diff:  run(delete, KeyGen, _ValueGen, State) ->
       {NextUrl, S2} = next_url(State),
       Url = url(NextUrl, KeyGen, State#state.path_params),
  -    case do_delete(Url, [State#state.client_id]) of
  +    case do_delete(Url, [State#state.client_id], State) of
           ok ->
               {ok, S2};
           {error, Reason} ->
  
positive.code:     %% Handle missing searchgen
      {NextUrl, S2} = next_url(State),
      SearchUrl = search_url(NextUrl, State#state.solr_path, State#state.searchgen),
      SearchRes = do_get(SearchUrl),
      case SearchRes of
          {ok, _Url, _Headers} ->
              {ok, S2};
  
negative.code: stat_url(BaseUrl) ->
      BaseUrl#url{path="/stats"}.
  
  do_stat(Url, S) ->
      case send_request(Url, [], get, [], [{response_format, binary}], S) of
          {ok, "200", Headers, _Body} ->
              {ok, Url, Headers};
          {ok, Code, _, _} ->
  