code: def run(self):
      import uvicorn
      from pyngrok import ngrok
  
      from autotrain.app import app
  
      if self.share:
          os.system(f"fuser -n tcp -k {self.port}")
          authtoken = os.environ.get("NGROK_AUTH_TOKEN", "")
          if authtoken.strip() == "":
              logger.info("NGROK_AUTH_TOKEN not set")
              raise ValueError(
                  "NGROK_AUTH_TOKEN not set. Please set it!"
              )
  
          ngrok.set_auth_token(authtoken)
          active_tunnels = ngrok.get_tunnels()
          for tunnel in active_tunnels:
              public_url = tunnel.public_url
              ngrok.disconnect(public_url)
          url = ngrok.connect(addr=self.port, bind_tls=True)
          logger.info(f"AutoTrain Public URL: {url}")
          logger.info("Please wait for the app to load...")
          logger.info("***")
  
      uvicorn.run(app, host=self.host, port=self.port)
  
file_path: autotrain-advanced/src/autotrain/cli/run_app.py
imports: import os
  from argparse import ArgumentParser
  from autotrain import logger
  from .None import BaseAutoTrainCommand
label_desc: Use image node_id 3 for calling the RunAutoTrainAppCommand obj's underlying member method code with example usage: obj.run() without return types