code: def start(self):
      self._start_time = time.perf_counter()
  
imports: import os
  import time
  import logging
  import numpy
  from typing import Union, Optional, Any
  import ivy
  from ivy.functional.ivy.device import Profiler
label_desc: Use image node_id 2 for calling the Profiler obj's underlying member method code with example usage: obj.start() without return types