makeMap(MapMaker maker) {
    return MapMakerInternalMap.create(maker);
  }

  private static MapMaker createMapMaker() {
    MapMaker maker = new MapMaker();
    maker.useCustomMap = true;
    return maker;
  }

  // constructor tests

  public void testDefaults() {
    MapMakerInternalMap<Object, Object, ?, ?> map = makeMap(createMapMaker());

          makeMap(MapMaker maker) {
    return MapMakerInternalMap.create(maker);
  }

  private static MapMaker createMapMaker() {
    MapMaker maker = new MapMaker();
    maker.useCustomMap = true;
    return maker;
  }

  // constructor tests

  public void testDefaults() {
    MapMakerInternalMap<Object, Object, ?, ?> map = makeMap(createMapMaker());

  public void testSerializationWithMapMaker1() {
    ConcurrentMap<String, AtomicInteger> map = new MapMaker().makeMap();
    multiset = ConcurrentHashMultiset.create(map);
    reserializeAndAssert(multiset);
  }

  public void testSerializationWithMapMaker2() {
    ConcurrentMap<String, AtomicInteger> map = new MapMaker().makeMap();
    multiset = ConcurrentHashMultiset.create(map);

        checkState(newMap instanceof MapMakerInternalMap);
        newMap.putAll(map);
        return newMap;
      }
    },
    MapMakerStrongKeysWeakValues {
      @Override
      public <K extends Comparable<K>, V> Map<K, V> create(Map<K, V> map) {
        ConcurrentMap<K, V> newMap = new MapMaker().weakValues().makeMap();

 *
 * <p>Usage example:
 *
 * {@snippet :
 * ConcurrentMap<Request, Stopwatch> timers = new MapMaker()
 *     .concurrencyLevel(4)
 *     .weakKeys()
 *     .makeMap();
 * }
 *
 * <p>These features are all optional; {@code new MapMaker().makeMap()} returns a valid concurrent
 * map that behaves similarly to a {@link ConcurrentHashMap}.
 *

 *
 * <p>Usage example:
 *
 * {@snippet :
 * ConcurrentMap<Request, Stopwatch> timers = new MapMaker()
 *     .concurrencyLevel(4)
 *     .weakKeys()
 *     .makeMap();
 * }
 *
 * <p>These features are all optional; {@code new MapMaker().makeMap()} returns a valid concurrent
 * map that behaves similarly to a {@link ConcurrentHashMap}.
 *

        checkState(newMap instanceof MapMakerInternalMap);
        newMap.putAll(map);
        return newMap;
      }
    },
    MapMakerStrongKeysWeakValues {
      @Override
      public <K extends Comparable<K>, V> Map<K, V> create(Map<K, V> map) {
        ConcurrentMap<K, V> newMap = new MapMaker().weakValues().makeMap();

        Map<Element, Element> map = new MapMaker().concurrencyLevel(1).makeMap();
        for (Element element : keys) {
          map.put(element, element);
        }
        return map;
      }
    },
    MapMaker16 {
      @Override
      Map<Element, Element> create(Collection<Element> keys) {
        Map<Element, Element> map = new MapMaker().concurrencyLevel(16).makeMap();
        for (Element element : keys) {

      fail();
    } catch (IllegalStateException expected) {
    }
  }

  public void testReturnsPlainConcurrentHashMapWhenPossible() {
    Map<?, ?> map = new MapMaker().initialCapacity(5).makeMap();
    assertTrue(map instanceof ConcurrentHashMap);
  }

      fail();
    } catch (IllegalStateException expected) {
    }
  }

  public void testReturnsPlainConcurrentHashMapWhenPossible() {
    Map<?, ?> map = new MapMaker().initialCapacity(5).makeMap();
    assertTrue(map instanceof ConcurrentHashMap);
  }