class_docstr: An activity tracer.
code: def __init__(self):
      self.events = []
  
file_path: H2O/h2o_flexgen/flexgen/timer.py
imports: from collections import namedtuple
  import time
  from typing import Callable, Any
label_desc: Use image node_id 1 to create a new Tracer object  with example: obj = Tracer()