code: def send_message(message):
      logger.info(f"Sending message: {message}")
  
file_path: pytorch-lightning/examples/app/pickle_or_not/app.py
imports: import logging
  from lightning.app import LightningApp, LightningFlow, LightningWork
label_desc: Use image node_id 2 for calling the Slack obj's underlying member method code with example usage: obj.send_message(message) without return types