def prepare_instance_filter(self, instance, network_info):
        raise NotImplementedError()
items is a list, key maps list elements to hashable keys,
dataset/ETHPy150Open nii-cloud/dodai-compute/nova/virt/libvirt/firewall.py/FirewallDriver.prepare_instance_filter--crossover with--dataset/ETHPy150Open Microsoft/ivy/src/ivy/ivy_utils.py/topological_sort