code: def json_checksum(obj: t.Union[dict, list]):
      checksum = str_checksum(CustomJSONEncoder().encode(obj))
      return checksum
  
imports: import os
  import time
  from abc import ABC
  from pathlib import Path
  import hashlib
  import typing
  import pandas
  import walrus
  from mindsdb.utilities.config import Config
  from mindsdb.utilities.json_encoder import CustomJSONEncoder
  from mindsdb.interfaces.storage.fs import FileLock
  from mindsdb.utilities.context import context
label_desc: Use image node_id 2 for calling a global function with example usage: json_checksum(obj) and returns: checksum