code: def __call__(
      node_resources: NodeResources,
      resource_demands: ResourceDemands,
      *,
      node_availability_summary: NodeAvailabilitySummary,
  ) -> Optional[UtilizationScore]:
      pass
  
imports: import collections
  import copy
  import logging
  import os
  from abc import abstractmethod
  from functools import partial
  from typing import Callable, Dict, List, Optional, Tuple
  import ray
  from ray._private.gcs_utils import PlacementGroupTableData
  from ray.autoscaler._private.constants import AUTOSCALER_CONSERVE_GPU_NODES, AUTOSCALER_UTILIZATION_SCORER_KEY
  from ray.autoscaler._private.loader import load_function_or_class
  from ray.autoscaler._private.node_provider_availability_tracker import NodeAvailabilitySummary
  from ray.autoscaler._private.util import NodeID, NodeIP, NodeType, NodeTypeConfigDict, ResourceDict, is_placement_group_resource
  from ray.autoscaler.node_provider import NodeProvider
  from ray.autoscaler.tags import NODE_KIND_HEAD, NODE_KIND_UNMANAGED, NODE_KIND_WORKER, TAG_RAY_NODE_KIND, TAG_RAY_USER_NODE_TYPE
  from ray.core.generated.common_pb2 import PlacementStrategy
label_desc: Use image node_id 1 for calling the UtilizationScorer obj's underlying member method code with example usage: obj.__call__(node_resources, resource_demands) without return types