code: def verify_aws_credentials(
      config: Config,
      system: System,
      *,
      access_key_id: str,
      secret_access_key: str,
  ) -> None:
      """"""
      calling_format = boto.s3.connection.OrdinaryCallingFormat()
      for bucket_name, bucket_region in [
          ("cdn.bokeh.org", "us-east-1"),
          ("cdn-backup.bokeh.org", "us-west-2"),
      ]:
          conn = boto.s3.connect_to_region(
              bucket_region,
              aws_access_key_id=access_key_id,
              aws_secret_access_key=secret_access_key,
              calling_format=calling_format,
          )
          conn.get_bucket(bucket_name)
  
file_path: bokeh/release/credentials.py
imports: from __future__ import annotations
  import os
  from functools import wraps
  from typing import Callable
  import boto
  import boto.s3.connection
  import boto.s3.key
  from .action import FAILED, PASSED, ActionReturn
  from .config import Config
  from .pipeline import StepType
  from .system import System
label_desc: Use image node_id 6 for calling a global function with example usage: verify_aws_credentials(config, system) without return types