code: def _build_stream_formatter() -> logging.Formatter:
      """Default formatter for log messages. Add timestamps to log messages."""
      return logging.Formatter(
          fmt="[%(levelname)s %(asctime)s] %(output_name)s: %(message)s",
          datefmt="%m-%d %H:%M:%S",
      )
  
imports: import logging
  import os
  import re
  from functools import wraps
  from typing import Any, Callable, Iterable, List, TypeVar
  from ax.utils.common.decorator import ClassDecorator
label_desc: Use image node_id 4 for calling a global function with example usage: _build_stream_formatter() and returns: logging