code: def decode_base64(encoded: str) -> str:
      decoded_bytes = base64.b64decode(encoded)
      return decoded_bytes.decode("utf-8")
  
imports: import base64
  import datetime
  import os
  import posixpath
  import re
  import urllib.parse
  from typing import Union
  from mlflow.entities import FileInfo
  from mlflow.entities.multipart_upload import CreateMultipartUploadResponse, MultipartUploadCredential
  from mlflow.environment_variables import MLFLOW_ARTIFACT_UPLOAD_DOWNLOAD_TIMEOUT
  from mlflow.exceptions import MlflowException
  from mlflow.store.artifact.artifact_repo import ArtifactRepository, MultipartUploadMixin
  from mlflow.tracking._tracking_service.utils import _get_default_host_creds
label_desc: Use image node_id 2 for calling a global function with example usage: decode_base64(encoded) and returns: decoded_bytes