anchor.diff:        opt_error("could not add ~s to code path", [Value])
     end,
     finalize(Rest, Acc);
  -finalize([{Key, Value}|Rest], AccIn) ->
  +finalize([{Key, Value} = Option|Rest], AccIn) ->
     Acc =
       case proplists:is_defined(Key, AccIn) of
         true ->
  
positive.code:     test ->
        case Rest =:= [] of
          true -> finalize(Rest, Acc);
          false -> finalize(Rest ++ [{Key, Value}], Acc)
        end;
      _ ->
        finalize(Rest, [{Key, Value}|Acc])
    end.
  
  -spec file_error(atom(), term()) -> no_return().
  
negative.code:             true ->
                check_values(
                  [{scheduling, fun(X) -> X =:= round_robin end}],
                  Rest ++ Acc, BoundType),
                consistent(Rest, [BoundType|Acc]);
              false ->
                consistent(Rest, [BoundType|Acc])
  