code: def _run_update(self):
      self.thread = Thread(target=self.start, args=())
      self.thread.start()
  
file_path: catboost/catboost/python-package/catboost/widget/ipythonwidget.py
imports: import os
  import json
  from threading import Thread, Event
  from traitlets import Unicode, Dict, default
  from IPython.display import display
  from ipywidgets import DOMWidget, Layout, widget_serialization
label_desc: Use image node_id 3 for calling the MetricVisualizer obj's underlying member method code with example usage: obj._run_update() without return types