@wrap_check_policy
    def migrate_instance_start(self, context, instance, migration):
        flavor = instance.get_flavor()
        args = dict(
            instance_uuid=instance.uuid,
            rxtx_factor=flavor['rxtx_factor'],
            project_id=instance.project_id,
            source_compute=migration['source_compute'],
            dest_compute=migration['dest_compute'],
            floating_addresses=None,
        )

        multi_host, addresses = self._get_multi_addresses(context, instance)
        if multi_host:
            args['floating_addresses'] = addresses
            args['host'] = migration['source_compute']

        self.network_rpcapi.migrate_instance_start(context, **args)
update subsampling.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/network/api.py/API.migrate_instance_start--crossover with--dataset/ETHPy150Open alexandrebarachant/Grasp-and-lift-EEG-challenge/preprocessing/aux.py/DelayPreds.update_subsample