def get_block_device(self, disk):
        return BlockDevice(self, disk)
test that connection pool args make it thru
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/virt/libvirt/guest.py/Guest.get_block_device--crossover with--dataset/ETHPy150Open zzzeek/sqlalchemy/test/engine/test_parseconnect.py/CreateEngineTest.test_poolargs