### Question:
Grid { public static WebTestSession getWebTestSession() { AbstractTestSession testSession = getTestSession(); if (!(testSession instanceof WebTestSession)) { testSession = null; } return (WebTestSession) testSession; } private  Grid(); static ThreadLocal<RemoteWebDriver> getThreadLocalWebDriver(); static ThreadLocal<AbstractTestSession> getThreadLocalTestSession(); @Deprecated /** * @deprecated in SeLion 1.2.0. Do not use. No alternative */ static ThreadLocal<Exception> getThreadLocalException(); static long getExecutionTimeoutValue(); static RemoteWebDriver driver(); static AbstractTestSession getTestSession(); static MobileTestSession getMobileTestSession(); static WebTestSession getWebTestSession(); static void open(String url); static RemoteNodeInformation getRemoteNodeInfo(String hostName, int port, SessionId session);  }### Answer:
@WebTest @Test(groups = "functional") public void testGetWebTestSession() { assertNotNull(Grid.getWebTestSession(), "verify that the mobiletestSession returned is not null"); assertEquals(Grid.getWebTestSession().getClass(), WebTestSession.class, "verify the returned test session is an instance WebTestSession"); }