class_docstr: Timer to save elapsed time
code: def _initialize(self) -> None:
      self.start_time = time.time()
  
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 3 for calling the Timer obj's underlying member method code with example usage: obj._initialize() without return types