response = service2.createSession(request, cbk2);
Assert.assertNotNull("the session ID is null", service2.getSessionId());
service1.deleteSession();
Assert.assertNull("the session ID is NOT null after deleteSession()", service1.getSessionId());
service2.deleteSession();
Assert.assertNull("the session ID is NOT null after deleteSession()", service2.getSessionId());
}
/**
* Description: screw up sessionId before create session<br>