code: def setup_method(self) -> None:
      with create_session() as session:
          session.query(Connection).delete()
  
imports: from __future__ import annotations
  import re
  import marshmallow
  import pytest
  from airflow.api_connexion.schemas.connection_schema import ConnectionCollection, connection_collection_item_schema, connection_collection_schema, connection_schema, connection_test_schema
  from airflow.models import Connection
  from airflow.utils.session import create_session, provide_session
  from tests.test_utils.db import clear_db_connections
label_desc: Use image node_id 1 for calling the TestConnectionCollectionSchema obj's underlying member method code with example usage: obj.setup_method() without return types