class_docstr: An in-memory implementation of the Storage interface. This implementation
  is not durable
class_docstr_tok: ["An","in-memory","implementation","of","the","Storage","interface",".","This","implementation","is","not","durable"]
code: def get_version(self) -> int:
      return self._version
  
file_path: ray/python/ray/autoscaler/v2/instance_manager/storage.py
imports: import copy
  from abc import ABCMeta, abstractmethod
  from collections import defaultdict, namedtuple
  from threading import Lock
  from typing import Dict, List, Optional, Tuple
label_desc: Use image node_id 6 for calling the InMemoryStorage obj's underlying member method code with example usage: obj.get_version() and returns: self