anchor.diff:  
   
   %% @private
  --spec supports_any_space(od_storage:record()) -> boolean().
  +-spec supports_any_space(od_storage:record() | od_storage:id()) -> boolean().
   supports_any_space(Storage) ->
       case get_spaces(Storage) of
           [] -> false;
  
positive.code: 
  
  %% @private
  -spec is_imported_storage(od_storage:id()) -> boolean() | no_return().
  is_imported_storage(#od_storage{imported = ImportedStorage}) ->
      ImportedStorage == true;
  is_imported_storage(StorageId) ->
  
negative.code: 
  
  %% @private
  -spec get_spaces(od_storage:record() | od_storage:id()) -> [od_space:id()].
  get_spaces(#od_storage{} = Storage) ->
      entity_graph:get_relations(direct, bottom_up, od_space, Storage);
  get_spaces(StorageId) when is_binary(StorageId) ->
  