code: def wait_for_bucket(s3_bucket_name):
      waiter = boto3.client("s3").get_waiter("bucket_exists")
      waiter.wait(Bucket=s3_bucket_name)
  
file_path: airflow/tests/system/providers/amazon/aws/example_dynamodb_to_s3.py
imports: from __future__ import annotations
  import logging
  from datetime import datetime
  import boto3
  import tenacity
  from tenacity import before_log, before_sleep_log
  from airflow.decorators import task
  from airflow.models.baseoperator import chain
  from airflow.models.dag import DAG
  from airflow.providers.amazon.aws.operators.s3 import S3CreateBucketOperator, S3DeleteBucketOperator
  from airflow.providers.amazon.aws.transfers.dynamodb_to_s3 import DynamoDBToS3Operator
  from airflow.utils.trigger_rule import TriggerRule
  from tests.system.providers.amazon.aws.utils import ENV_ID_KEY, SystemTestContextBuilder
  from tests.system.utils import get_test_run
label_desc: Use image node_id 4 for calling a global function with example usage: wait_for_bucket(s3_bucket_name) without return types