code: def get_num_cpus(self):
      return self._resource_manager._total_resources.get("CPU", 0)
  
imports: import os
  import uuid
  from typing import Any, Callable, Dict, Optional, Tuple, Type, Union
  import ray
  from ray.air.execution import FixedResourceManager
  from ray.air.execution._internal import RayActorManager
  from ray.air.execution.resources import ResourceManager, ResourceRequest
  from ray.air.execution._internal.tracked_actor import TrackedActor
  from ray.tune.execution.tune_controller import TuneController
  from ray.tune.experiment import Trial
  from ray.tune.utils.resource_updater import _ResourceUpdater
  from ray.train.tests.util import mock_storage_context
label_desc: Use image node_id 2 for calling the _FakeResourceUpdater obj's underlying member method code with example usage: obj.get_num_cpus() and returns: self