code: def _get_cached_node(self, node_id: str) -> GCPNode:
      if node_id in self.cached_nodes:
          return self.cached_nodes[node_id]
  
      return self._get_node(node_id)
  
imports: import copy
  import logging
  import time
  from functools import wraps
  from threading import RLock
  from types import ModuleType
  from typing import Any, Dict, List, Optional, Tuple
  import googleapiclient
  from ray.autoscaler._private.gcp.config import bootstrap_gcp, construct_clients_from_provider_config, get_node_type, tpu_accelerator_config_to_type
  from ray.autoscaler._private.gcp.node import GCPTPU
  from ray.autoscaler._private.gcp.node import GCPCompute, GCPNode, GCPNodeType, GCPResource
  from ray.autoscaler._private.gcp.tpu_command_runner import TPUCommandRunner
  from ray.autoscaler.command_runner import CommandRunnerInterface
  from ray.autoscaler.node_provider import NodeProvider
label_desc: Use image node_id 15 for calling the GCPNodeProvider obj's underlying member method code with example usage: obj._get_cached_node(node_id) and returns: self, self