class_docstr: Instance storage stores the states of instances in the storage. It also
  allows users to subscribe to instance status changes to trigger reconciliation
  with cloud provider.
docstr: Get instances from the storage.
  
  Args:
      instance_ids: A list of instance ids to be retrieved. If empty, all
          instances will be retrieved.
      status_filter: Only instances with the specified status will be returned.
  
  Returns:
      Tuple[Dict[str, Instance], int]: A tuple of (instances, version).
          The instances is a dictionary of (instance_id, instance) pairs.
docstr_tok: ["Get","instances","from","the","storage",".","Args",":","instance_ids",":","A","list","of","instance","ids","to","be","retrieved",".","If","empty",",","all","instances","will","be","retrieved",".","status_filter",":","Only","instances","with","the","specified","status","will","be","returned",".","Returns",":","Tuple","[","Dict","[","str",",","Instance","]",",","int","]",":","A","tuple","of","(","instances",",","version",")",".","The","instances","is","a","dictionary","of","(","instance_id",",","instance",")","pairs","."]
code: def get_instances(
      self,
      instance_ids: List[str] = None,
      status_filter: Set[int] = None,
  ) -> Tuple[Dict[str, Instance], int]:
      """Get instances from the storage.
  
      Args:
          instance_ids: A list of instance ids to be retrieved. If empty, all
              instances will be retrieved.
          status_filter: Only instances with the specified status will be returned.
  
      Returns:
          Tuple[Dict[str, Instance], int]: A tuple of (instances, version).
              The instances is a dictionary of (instance_id, instance) pairs.
      """
      instance_ids = instance_ids or []
      status_filter = status_filter or set()
      pairs, version = self._storage.get(self._table_name, instance_ids)
      instances = {}
      for instance_id, (instance_data, entry_version) in pairs.items():
          instance = Instance()
          instance.ParseFromString(instance_data)
          instance.version = entry_version
          if status_filter and instance.status not in status_filter:
              continue
          instances[instance_id] = instance
      return instances, version
  
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 5 for calling the InstanceStorage obj's underlying member method code with example usage: obj.get_instances(instance_ids, status_filter) and returns: instances,  version