code: def send(self, message):
      payload = {"sender": self.id, "message": "hey there"}
      headers = {"content-type": "application/json"}
      r = requests.post(
          "http://localhost:5005/webhooks/rest/webhook",
          json=payload,
          headers=headers,
      )
      if r is None:
          return None
      return r.json()
  
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 ChatUser obj's underlying member method code with example usage: obj.send(message) and returns: r, None