code: def stream(cls, response, sequence):
          
          # Construct the iterator and run the sequence once in order
          # to capture any headers and status codes set.
          iterator = iter(sequence)
          data = {'chunk': next(iterator)}
          response.streaming = True
  
          def streamer():
              # Iterate through the iterator and yield its content
              while True:
                  if response.asynchronous:
                      # Yield our current chunk.
                      yield data['chunk']
  
                  else:
                      # Write the chunk to the response
                      response.send(data['chunk'])
  
                      # Yield its body
                      yield response.body
  
                      # Unset the body.
                      response.body = None
  
                  try:
                      # Get the next chunk.
                      data['chunk'] = next(iterator)
  
                  except StopIteration:
                      # Get out of the loop.
                      break
  
              if not response.asynchronous:
                  # Close the response.
                  response.close()
  
          # Return the streaming function.
          return streamer()
docs: Helper method used in conjunction with the view handler to
          stream responses to the client.