code: def AsyncResponseMiddleware(environ, resp):
      '''This is just for testing the asynchronous response middleware
      '''
      future = create_future()
      future._loop.call_soon(future.set_result, resp)
      return futurf AsyncResponseMiddleware(environ, resp):
      '''This is just for testing the asynchronous response middleware
      '''
      future = create_future()
      future._loop.call_soon(future.set_result, resp)
      return future
docs: This is just for testing the asynchronous response middleware