Orders and Matches

[kraken21]

I have 1 unmatched bet in runner(horse1), 1 matched bet back in runner(horse1), 1 matched bet lay in runner(horse1).

But runner.getMatches() - null.
runner.getOrders() - null.

Why?

How can I find Order of runner and Match of runner?

-----------------

Because when I get

List<MarketBook> marketBookReturn = jsonOperations.listMarketBook(marketIds, priceProjection, orderProjection, matchProjection, currencyCode, applicationKey, sessionToken);

I use

OrderProjection orderProjection = null;
MatchProjection matchProjection = null;

But if

OrderProjection orderProjection = OrderProjection.ALL;
MatchProjection matchProjection = MatchProjection.NO_ROLLUP;

I can find Order of runner and Match of runner)