code: def setup_method(self, method):
      args = {
          "owner": "airflow",
          "start_date": DEFAULT_DATE,
      }
  
      self.dag = DAG(
          TEST_DAG_ID + "test_schedule_dag_once",
          default_args=args,
          schedule="@once",
      )
  
      self.client = boto3.client("datasync", region_name="us-east-1")
      self.datasync = None
  
      self.source_location_arn = self.client.create_location_smb(
          **MOCK_DATA["create_source_location_kwargs"]
      )["LocationArn"]
      self.destination_location_arn = self.client.create_location_s3(
          **MOCK_DATA["create_destination_location_kwargs"]
      )["LocationArn"]
      self.task_arn = self.client.create_task(
          SourceLocationArn=self.source_location_arn,
          DestinationLocationArn=self.destination_location_arn,
      )["TaskArn"]
  
imports: from __future__ import annotations
  from unittest import mock
  import boto3
  import pytest
  from moto import mock_datasync
  from airflow.exceptions import AirflowException
  from airflow.models import DAG, DagRun, TaskInstance
  from airflow.providers.amazon.aws.hooks.datasync import DataSyncHook
  from airflow.providers.amazon.aws.operators.datasync import DataSyncOperator
  from airflow.utils import timezone
  from airflow.utils.timezone import datetime
label_desc: Use image node_id 1 for calling the DataSyncTestCaseBase obj's underlying member method code with example usage: obj.setup_method(method) without return types