def _string_right(self, nchars):
    return _ops.StrRight(self, nchars).to_expr()
``attach_volume`` can attach multiple block devices to a single host.
dataset/ETHPy150Open cloudera/ibis/ibis/expr/api.py/_string_right--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/testtools/_blockdevice.py/IBlockDeviceAPITestsMixin.test_multiple_volumes_attached_to_host