code: def put(self, k, v):
      self.to_flush[k] = v
      if ray.is_initialized():
          self.flush()
  
imports: import atexit
  import logging
  from functools import partial
  from types import FunctionType
  from typing import Callable, Optional, Type, Union
  import ray
  import ray.cloudpickle
  from ray.experimental.internal_kv import _internal_kv_get, _internal_kv_initialized, _internal_kv_put, _internal_kv_del
  from ray.tune.error import TuneError
  from ray.util.annotations import DeveloperAPI
label_desc: Use image node_id 2 for calling the _ParameterRegistry obj's underlying member method code with example usage: obj.put(k, v) without return types