### Question:
PersistenceCacheManager { public void markAllNodesNotTraversed() { for (Node node : persistenceCache.getMainCache().getAllNodes()) { node.setTraversed(false); } } PersistenceCacheManager(PersistenceCache pc); void clearPersistenceCache(); void markAllNodesNotTraversed(); static void addEntityToPersistenceCache(Object entity, PersistenceDelegator pd, Object entityId);  }### Answer:
@Test public void testMarkAllNodesNotTraversed() { }