CacheBuilder { public static HeapCacheBuilder heapCache() { return new HeapCacheBuilder(); }  static HeapCacheBuilder heapCache(); static OffHeapCacheBuilder offHeapCache(); static VersionedOffHeapCacheBuilder versionedOffHeapCache(); static RedisCacheBuilder redisCache();  }
@Test public void heapCache() { assertTrue(CacheBuilder.heapCache() instanceof HeapCacheBuilder); }