code: def _generate_key(self):
      return hashlib.sha256(self.remote_path.encode()).hexdigest()
  
imports: import hashlib
  import os
  import re
  import tarfile
  from typing import Dict
  from studio.artifacts import artifacts_tracker
  from studio.util import util, logs
  from studio.credentials import credentials
  from studio.storage import storage_setup
  from studio.storage.storage_type import StorageType
  from studio.storage.storage_handler import StorageHandler
  from studio.storage.storage_handler_factory import StorageHandlerFactory
  from studio.storage.storage_util import tar_artifact, untar_artifact
label_desc: Use image node_id 20 for calling the Artifact obj's underlying member method code with example usage: obj._generate_key() and returns: hashlib