code: def stop(self):
      os.killpg(os.getpgid(self.p.pid), signal.SIGTERM)
  
file_path: underthesea/examples/chatbot/baggage_claim/run_tests.py
imports: import os
  import signal
  import subprocess
  from os.path import dirname, join
  from time import sleep
  import requests
  import yaml
  import uuid
label_desc: Use image node_id 3 for calling the RasaServer obj's underlying member method code with example usage: obj.stop() without return types