class_docstr: Timer.
code: def __init__(self, name):
      self.name_ = name
      self.elapsed_ = 0.0
      self.started_ = False
      self.start_time = time.time()
  
imports: import os
  import sys
  import time
  import torch
  from apex.transformer.microbatches import build_num_microbatches_calculator
  from .arguments import parse_args
label_desc: Use image node_id 1 to create a new _Timer object  with example: obj = _Timer(name)