def pong(self, *args, **kwargs):
        # pylint: disable=unused-argument
        self._mk_cmd('pong')
        return True
Sends pong reply to Polyglot's ping request. This verifies that the
dataset/ETHPy150Open UniversalDevicesInc/Polyglot/polyglot/nodeserver_api.py/PolyglotConnector.pong