@Test
 public void testCallGetNotifications() {
   Call call = new Call(CLIENT, CALL_SID);
   NotificationList notifications = call.getNotifications();
   assertNotNull(notifications);
   assertEquals(CALL_SID, notifications.getRequestCallSid());
 }
 @Test
 public void testCallNotificationListTwilioRestClientStringStringMap() {
   NotificationList notifications =
       new NotificationList(CLIENT, CALL_SID, new HashMap<String, String>());
   assertNotNull(notifications);
   assertEquals(CALL_SID, notifications.getRequestCallSid());
 }