code: def current_node_id():
      """Return the node id of the current node.
  
      For example, "node:172.10.5.34". This can be used as a custom resource,
      e.g., {node_id: 1} to reserve the whole node, or {node_id: 0.001} to
      just force placement on the node.
  
      Returns:
          Id of the current node.
      """
      return NODE_ID_PREFIX + ray.util.get_node_ip_address()
  
imports: import json
  import logging
  from collections import defaultdict
  from typing import Set
  from google.protobuf.json_format import MessageToDict
  import ray
  from ray._private.client_mode_hook import client_mode_hook
  from ray._private.resource_spec import NODE_ID_PREFIX, HEAD_NODE_RESOURCE_NAME
  from ray._private.utils import binary_to_hex, decode, hex_to_binary, validate_actor_state_name
  from ray._raylet import GlobalStateAccessor
  from ray.core.generated import common_pb2
  from ray.core.generated import gcs_pb2
  from ray.util.annotations import DeveloperAPI
label_desc: Use image node_id 5 for calling a global function with example usage: current_node_id() and returns: unknown