code: def get_node_uid() -> str:
      return get_credential(NODE_UID, validate_uid, generate_node_uid)
  
imports: import argparse
  import json
  import os
  from typing import Callable
  from typing import Dict
  from typing import Optional
  from typing import Union
  import uuid
  from nacl.encoding import HexEncoder
  from nacl.signing import SigningKey
label_desc: Use image node_id 14 for calling a global function with example usage: get_node_uid() and returns: get_credential