code: def __init__(self, _id: str, config: dict):
      super().__init__(_id)
      self.message_template = config["message"]
  
      self.url = config["url"]
  
imports: import requests
  from typing import Optional
  from aim.ext.notifier.base_notifier import BaseNotifier
label_desc: Use image node_id 1 to create a new SlackNotifier object from inherited base classes: BaseNotifier with example: obj = SlackNotifier(_id, config)