code: def start(self):
      tf.profiler.experimental.start(
          self._save_dir, options=self._options
      )
  
imports: import tensorflow
  from typing import Union, Optional
  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