code: def setup_method(self):
      clear_db_dags()
  
file_path: airflow/tests/models/test_dagwarning.py
imports: from __future__ import annotations
  from unittest import mock
  from unittest.mock import MagicMock
  import pytest
  from sqlalchemy.exc import OperationalError
  from airflow.models import DagModel
  from airflow.models.dagwarning import DagWarning
  from tests.test_utils.db import clear_db_dags
label_desc: Use image node_id 1 for calling the TestDagWarning obj's underlying member method code with example usage: obj.setup_method() without return types