def _send100Continue(self, streamID):
        """
        Sends a 100 Continue response, used to signal to clients that further
        processing will be performed.

        @param streamID: The ID of the stream that needs the 100 Continue
        response
        @type streamID: L{int}
        """
        headers = [(b':status', b'100')]
        self.conn.send_headers(headers=headers, stream_id=streamID)
        self.transport.write(self.conn.data_to_send())

        Sends a 100 Continue response, used to signal to clients that further
        processing will be performed.

        @param streamID: The ID of the stream that needs the 100 Continue
        response
        @type streamID: L{int}
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/_http2.py