@property
    def server_address_family(self):
        assert self._server_addr_family is not None, "Not in context"

        return self._server_addr_family
If one of the ``list``\ s passed to ``_latest_common_snapshot`` is
dataset/ETHPy150Open pika/pika/tests/acceptance/forward_server.py/ForwardServer.server_address_family--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/volume/test/test_filesystems_zfs.py/LatestCommonSnapshotTests.test_empty_list