def resumeProducing(self):
        """
        Resume producing data.

        This tells the L{H2Connection} to re-add itself to the main loop and
        produce more data for the consumer.
        """
        if self._consumerBlocked is not None:
            d = self._consumerBlocked
            self._consumerBlocked = None
            d.callback(None)

        Resume producing data.

        This tells the L{H2Connection} to re-add itself to the main loop and
        produce more data for the consumer.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/_http2.py