code: def start(self):
      self._prof.__enter__()
  
imports: import inspect
  import os
  import importlib
  import torch
  from typing import Optional, Union
  from torch.profiler import ProfilerActivity
  from torch.profiler import profile
  import ivy
  from ivy.functional.ivy.device import _shift_native_arrays_on_default_device, 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