class_docstr: Subscribers to instance status changes.
code: def notify(self, events: List[InstanceUpdateEvent]) -> None:
      pass
  
file_path: ray/python/ray/autoscaler/v2/instance_manager/instance_storage.py
imports: import copy
  import logging
  from abc import ABCMeta, abstractmethod
  from typing import Dict, List, Optional, Set, Tuple
  from ray.autoscaler.v2.instance_manager.storage import Storage, StoreStatus
  from ray.core.generated.instance_manager_pb2 import Instance, InstanceUpdateEvent
label_desc: Use image node_id 1 for calling the InstanceUpdatedSubscriber obj's underlying member method code with example usage: obj.notify(events) without return types