code: def _get_tpu_library_path() -> str | None:
      path_from_env = os.getenv("TPU_LIBRARY_PATH")
      if path_from_env is not None:
          return path_from_env
  
      libtpu_module = maybe_import_libtpu()
      if libtpu_module is not None:
          if hasattr(libtpu_module, "get_library_path"):
              if xla_extension_version < 212:
                  # xla_extension_version < 212 uses tpu_tracer which requires calling
                  # configure_library_path.
                  libtpu_module.configure_library_path()
              return libtpu_module.get_library_path()
          else:
              # TODO(b/305803029): Remove this branch around 01/2024 after the oldest
              # supported TPU has get_library_path.
              libtpu_module.configure_library_path()
              return os.getenv("TPU_LIBRARY_PATH", None)
  
      return None
  
imports: from __future__ import annotations
  from __future__ import annotations
  from collections.abc import Mapping
  import dataclasses
  from functools import lru_cache, partial
  import importlib
  import json
  import logging
  import os
  import pkgutil
  import platform
  import sys
  import threading
  from typing import Any, Callable, Union
  import warnings
  from jax._src import config
  from jax._src import distributed
  from jax._src import traceback_util
  from jax._src import util
  from jax._src import hardware_utils
  from jax._src.cloud_tpu_init import maybe_import_libtpu
  from jax._src.lib import cuda_versions
  from jax._src.lib import xla_client
  from jax._src.lib import xla_extension
  from jax._src.lib import xla_extension_version
label_desc: Use image node_id 2 for calling a global function with example usage: _get_tpu_library_path() and returns: None, path_from_env, libtpu_module, os