code: def get_full_stack_id(stack_id):
      return f"buildkite-{stack_id}-autoscaling-group"
  
file_path: xgboost/tests/buildkite/infrastructure/aws-stack-creator/create_stack.py
imports: import argparse
  import copy
  import os
  import re
  import sys
  import boto3
  import botocore
  from metadata import AMI_ID, COMMON_STACK_PARAMS, STACK_PARAMS
  from common_blocks.utils import create_or_update_stack, wait
label_desc: Use image node_id 4 for calling a global function with example usage: get_full_stack_id(stack_id) and returns: str, stack_id, str