docs: public static void removeMap(Cache<Object, Object> cache, Object group) {
        FunctionalMapImpl<Object, Object> fmap = FunctionalMapImpl.create(cache.getAdvancedCache());
        FunctionalMap.ReadWriteMap<Object, Object> rw = ReadWriteMapImpl.create(fmap).withParams(Param.LockingMode.SKIP);
        new TransactionHelper(cache.getAdvancedCache()).run(() -> {
           Set<Object> keys = wait(rw.eval(group, AtomicKeySetImpl.RemoveMap.instance()));
           if (keys != null) {
              removeAll(cache, group, keys);
           }
           return null;
        });
     }