code: def setup_method(self):
      args = {"owner": "airflow", "start_date": DEFAULT_DATE}
      self.dag = DAG("test_dag_id", default_args=args)
  
imports: from __future__ import annotations
  import datetime
  from airflow.models.dag import DAG
  from airflow.providers.apache.spark.operators.spark_sql import SparkSqlOperator
label_desc: Use image node_id 1 for calling the TestSparkSqlOperator obj's underlying member method code with example usage: obj.setup_method() without return types