class_docstr: Class that is callable.
docstr: A __call__ method
code: def __call__(self):
      """A __call__ method"""
  
file_path: airflow/tests/dags/test_task_view_type_check.py
imports: from __future__ import annotations
  import functools
  import logging
  from datetime import datetime
  from airflow.models.dag import DAG
  from airflow.operators.python import PythonOperator
label_desc: Use image node_id 1 for calling the CallableClass obj's underlying member method code with example usage: obj.__call__() without return types