def handle_nack(self, delivery_tag):
        _LOG.error("Message NACKed: tag=%s", delivery_tag)

        assert not self.ready, (delivery_tag, self.values)

        self(self.NACK, delivery_tag)
Method should be called to destroy the protocol proxy referenced by
dataset/ETHPy150Open agoragames/haigha/tests/integration/rabbit_extensions_test.py/_PubackState.handle_nack--crossover with--dataset/ETHPy150Open rapyuta/rce/rce-core/rce/core/network.py/Endpoint.destroyProtocol