code: def start(self):
      self.p = subprocess.Popen(
          "rasa run --enable-api",
          stdout=subprocess.PIPE,
          shell=True,
          cwd=CWD,
          preexec_fn=os.setsid,
      )
  
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 2 for calling the RasaServer obj's underlying member method code with example usage: obj.start() without return types