anchor.diff:          false ->
               ok
       end.
  -
  -    
  
positive.code:     end.
  
  close_trees(State=#state{trees=Trees}) ->
      Trees2 = [{IdxN, hashtree:close(Tree)} || {IdxN, Tree} <- Trees],
      State#state{trees=Trees2}.
  
  %% @private
  %% @doc Unless skipping the background manager, try to acquire the per-vnode lock.
  
negative.code: handle_info(_Info, State) ->
      {noreply, State}.
  
  terminate(_Reason, State) ->
      close_trees(State),
      ok.
  
  code_change(_OldVsn, State, _Extra) ->
  