class_docstr: Timer to save elapsed time
code: def __init__(self):
      super(Timer, self).__init__(None)
  
imports: from __future__ import annotations
  import time
  import warnings
  from abc import ABC, abstractmethod
  from typing import Optional, Union
  from torch import Tensor
  from ..engine.distributed import reduce_value
label_desc: Use image node_id 1 to create a new Timer object from inherited base classes: Meter with example: obj = Timer()