anchor.diff:              TmpAns
       end;
   add_non_existing_to_map(_Driver, _ModelConfig, _Key, _LDK, _GetAns, _Link, _KeyNum) ->
  -    ok.+    ok.
  
positive.code: %% Create base for links document key (base must be cut if too long).
  %% @end
  %%--------------------------------------------------------------------
  -spec links_doc_key_from_scope(Key :: datastore:key(), Scope :: atom() | mother_scope_fun()) -> BinKey :: binary().
  links_doc_key_from_scope(Key, ScopeFun) when is_function(ScopeFun) ->
      links_doc_key_from_scope(Key, ScopeFun());
  links_doc_key_from_scope(Key, Scope) when is_binary(Key), is_binary(Scope) ->
  
negative.code: %% Returns key for document holding links for given document.
  %% @end
  %%--------------------------------------------------------------------
  -spec links_doc_key(Key :: datastore:key(), Scope :: atom() | binary() | mother_scope_fun()) -> BinKey :: binary().
  links_doc_key(Key, Scope) ->
      Base = links_doc_key_from_scope(Key, Scope),
      case byte_size(Base) > 120 of
  