anchor.diff:          end,
   
           {ok, FinalIdxState} = Mod:finish_update(LastIdxSt),
  -        gen_server:cast(Parent, {self(), updated, FinalIdxState})
  +        exit({updated, FinalIdxState})
       end).
   
   
  
positive.code:     {reply, false, State}.
  
  
  handle_cast({Pid, updated, IdxState}, #st{mod=Mod, pid=Pid}=State) ->
      Args = [Mod:get(db_name, IdxState), Mod:get(idx_name, IdxState)],
      ?LOG_INFO("Index update finished for db: ~s idx: ~s", Args),
      ok = gen_server:cast(State#st.idx, {updated, IdxState}),
      {noreply, State#st{pid=undefined}};
  handle_cast(_Mesg, State) ->
      {stop, unknown_cast, State}.
  
  
  handle_info({'EXIT', Pid, reset}, #st{idx=Idx, pid=Pid}=State) ->
      {ok, NewIdxState} = gen_server:call(State#st.idx, reset),
      Self = self(),
      Fun = fun() -> update(Self, Idx, State#st.mod, NewIdxState) end,
      Pid2 = spawn_link(Fun),
      {noreply, State#st{pid=Pid2}};
  handle_info({'EXIT', Pid, normal}, #st{pid=Pid}=State) ->
      {noreply, State#st{pid=undefined}};
  
negative.code:     gen_server:call(Pid, is_running).
  
  
  update(Mod, State) ->
      update(nil, Mod, State).
  
  
  restart(Pid, IdxState) ->
  