code: def get_max_disk_utilization_from_env() -> Optional[float]:
      env_limit_disk_utilization = os.getenv(NEPTUNE_MAX_DISK_USAGE)
  
      if env_limit_disk_utilization is None:
          return None
  
      try:
          limit_disk_utilization = float(env_limit_disk_utilization)
          if (
              limit_disk_utilization <= 0
              or limit_disk_utilization > 100
          ):
              raise ValueError
  
          return limit_disk_utilization
      except (ValueError, TypeError):
          warn_once(
              f"Provided invalid value of '{NEPTUNE_MAX_DISK_USAGE}': '{env_limit_disk_utilization}'. "
              "Check of disk utilization will not be applied.",
              exception=NeptuneWarning,
          )
          return None
  
imports: import os
  from abc import ABC, abstractmethod
  from functools import wraps
  from typing import Any, Callable, Optional
  import psutil
  from psutil import Error
  from neptune.common.warnings import NeptuneWarning, warn_once
  from neptune.constants import NEPTUNE_DATA_DIRECTORY
  from neptune.envs import NEPTUNE_MAX_DISK_USAGE, NEPTUNE_RAISE_ERROR_ON_DISK_USAGE_EXCEEDED
  from neptune.exceptions import NeptuneMaxDiskUtilizationExceeded
label_desc: Use image node_id 3 for calling a global function with example usage: get_max_disk_utilization_from_env() and returns: None, limit_disk_utilization, None