class_docstr: BaseNotifier class for sending notifications.
class_docstr_tok: ["BaseNotifier","class","for","sending","notifications","."]
code: def _render(self, template, context, dag: DAG | None = None):
      dag = dag or context["dag"]
      return super()._render(template, context, dag)
  
file_path: airflow/airflow/notifications/basenotifier.py
imports: from __future__ import annotations
  from abc import abstractmethod
  from typing import TYPE_CHECKING, Sequence
  from airflow.template.templater import Templater
  from airflow.utils.context import context_merge
label_desc: Use image node_id 3 for calling the BaseNotifier obj's underlying member method code with example usage: obj._render(template, context, dag) and returns: super