  
          self.assertFalse(hasattr(MockView_NonTimeThrottling.throttle_classes[0], 'called'))
  
          response = MockView_NonTimeThrottling.as_view()(request)
          self.assertFalse('X-Throttle-Wait-Seconds' in response)
          self.assertFalse('Retry-After' in response)
  
          self.assertTrue(MockView_NonTimeThrottling.throttle_classes[0].called)
  
          response = MockView_NonTimeThrottling.as_view()(request)
 
</s> remove         self.assertFalse('X-Throttle-Wait-Seconds' in response)
 </s> add  </s> remove                 self.assertEqual(response['X-Throttle-Wait-Seconds'], expect)
 </s> add  </s> remove                 self.assertFalse('X-Throttle-Wait-Seconds' in response)
 </s> add  </s> remove         Ensure the response returns an X-Throttle field with status and next attributes
 </s> add         Ensure the response returns an Retry-After field with status and next attributes </s> remove             headers['X-Throttle-Wait-Seconds'] = '%d' % exc.wait
 </s> add 
  
          self.assertFalse(hasattr(MockView_NonTimeThrottling.throttle_classes[0], 'called'))
  
          response = MockView_NonTimeThrottling.as_view()(request)

          self.assertFalse('Retry-After' in response)
  
          self.assertTrue(MockView_NonTimeThrottling.throttle_classes[0].called)
  
          response = MockView_NonTimeThrottling.as_view()(request)
keep keep keep keep replace keep keep keep keep keep
 Throttles now use Retry-After header and no longer support the custom style 
tests/test_throttling.py