anchor.diff:  -type key() :: file_meta:name() | atom().
   
   %% API
  --export([run/2, maybe_delete_imported_file_and_update_counters/3,
  -    delete_imported_file/2]).
  +-export([run/2, delete_imported_file/2]).
   
   %%-------------------------------------------------------------------
   %% @doc
  
positive.code:                     ets:insert(TableName, {LinkName, undefined}),
                      AccIn
              end
      end, []).
  
  %%-------------------------------------------------------------------
  %% @private
  
negative.code: %% and save their names in ets TableName.
  %% @end
  %%-------------------------------------------------------------------
  -spec save_db_children_names(atom(), file_ctx:ctx()) -> ok.
  save_db_children_names(TableName, FileCtx) ->
      FileUuid = file_ctx:get_uuid_const(FileCtx),
      UserCtx = user_ctx:new(?ROOT_SESS_ID),
      file_meta:foreach_child({uuid, FileUuid}, fun
          (LinkName, _LinkTarget, AccIn) ->
              case file_meta:is_hidden(LinkName) of
  