class_docstr: Use Apprise(https://github.com/caronc/apprise) to interact with notification services.
  
  The complete list of notification services supported by Apprise can be found at:
  https://github.com/caronc/apprise/wiki#notification-services.
  
  :param apprise_conn_id: :ref:`Apprise connection id <howto/connection:apprise>`
      that has services configured in the `config` field.
code: def get_conn(self) -> None:
      raise NotImplementedError()
  
file_path: airflow/airflow/providers/apprise/hooks/apprise.py
imports: from __future__ import annotations
  import json
  from typing import Any, Iterable
  import apprise
  from apprise import AppriseConfig, NotifyFormat, NotifyType
  from airflow.hooks.base import BaseHook
label_desc: Use image node_id 5 for calling the AppriseHook obj's underlying member method code with example usage: obj.get_conn() without return types