### Question:
PersistenceCacheManager { public void clearPersistenceCache() { persistenceCache.clean(); } PersistenceCacheManager(PersistenceCache pc); void clearPersistenceCache(); void markAllNodesNotTraversed(); static void addEntityToPersistenceCache(Object entity, PersistenceDelegator pd, Object entityId);  }### Answer:
@Test public void testClearPersistenceCache() { }