code: def start(self, cond=True):
      if cond:
          self.start_time = time.time()
          self.started = True
  
file_path: deepspeedexamples/training/bing_bert/timer.py
imports: import time
  import logging
  import psutil
  import torch
label_desc: Use image node_id 2 for calling the ThroughputTimer obj's underlying member method code with example usage: obj.start(cond) without return types