def get_supported_boot_devices(self, task):
        return list(_BOOT_DEVICES_MAP.keys())
List the samples for this meters.
dataset/ETHPy150Open openstack/ironic/ironic/drivers/modules/ssh.py/SSHManagement.get_supported_boot_devices--crossover with--dataset/ETHPy150Open Havate/havate-openstack/proto-build/gui/horizon/Horizon_GUI/openstack_dashboard/api/ceilometer.py/sample_list