code: def key_pair_paths(key_name):
      """Returns public and private key paths for a given key_name."""
      public_key_path = os.path.expanduser(
          "~/.ssh/{}.pub".format(key_name)
      )
      private_key_path = os.path.expanduser(
          "~/.ssh/{}.pem".format(key_name)
      )
      return public_key_path, private_key_path
  
imports: import copy
  import json
  import logging
  import os
  import re
  import time
  from functools import partial, reduce
  from cryptography.hazmat.backends import default_backend
  from cryptography.hazmat.primitives import serialization
  from cryptography.hazmat.primitives.asymmetric import rsa
  from google.oauth2 import service_account
  from google.oauth2.credentials import Credentials
  from googleapiclient import discovery, errors
  from ray._private.accelerators import TPUAcceleratorManager, tpu
  from ray.autoscaler._private.gcp.node import MAX_POLLS, POLL_INTERVAL, GCPNodeType
  from ray.autoscaler._private.util import check_legacy_fields
label_desc: Use image node_id 9 for calling a global function with example usage: key_pair_paths(key_name) and returns: public_key_path,  private_key_path