code: def datetime_to_epoch_ms(date_time: datetime) -> int:
      """Convert a datetime object to an epoch integer (milliseconds)."""
      return int(date_time.timestamp() * 1_000)
  
file_path: airflow/airflow/providers/amazon/aws/utils/__init__.py
imports: from __future__ import annotations
  import logging
  import re
  from datetime import datetime, timezone
  from enum import Enum
  from airflow.utils.helpers import prune_dict
  from airflow.version import version
label_desc: Use image node_id 3 for calling a global function with example usage: datetime_to_epoch_ms(date_time) and returns: int