cl.write(TestingUtil.marshalledEntry(k3, getMarshaller()));
assert cl.contains("k1");
assert cl.contains("k2");
assert cl.contains("k3");
Thread.sleep(lifespan + 100);
cl.purge(new WithinThreadExecutor(), null);
LevelDBStore fcs = (LevelDBStore) cl;
assert fcs.load("k1") == null;
assert fcs.load("k2") == null;
assert fcs.load("k3") == null;
}