list.size > 0 changed to !list.isEmpty

We care about if it's empty or not, not about it's size

Mage/src/main/java/mage/abilities/keyword/HideawayAbility.java

@@ -118,7 +118,7 @@ class HideawayExileEffect extends OneShotEffect {
 
         Cards cards = new CardsImpl();
         cards.addAll(controller.getLibrary().getTopCards(game, 4));
-        if (cards.size() > 0) {
+        if (!cards.isEmpty()) {
             TargetCard target1 = new TargetCard(Zone.LIBRARY, filter1);
             if (controller.choose(Outcome.Detriment, cards, target1, game)) {
                 Card card = cards.get(target1.getFirstTarget(), game);