code: def setup_method(self):
      args = {"owner": "airflow", "start_date": DEFAULT_DATE}
  
      self.mock_context = MagicMock()
      self.operator = EmrModifyClusterOperator(
          task_id="test_task",
          cluster_id="j-8989898989",
          step_concurrency_level=1,
          aws_conn_id="aws_default",
          dag=DAG("test_dag_id", default_args=args),
      )
  
file_path: airflow/tests/providers/amazon/aws/operators/test_emr_modify_cluster.py
imports: from __future__ import annotations
  from unittest.mock import MagicMock, patch
  import pytest
  from airflow.exceptions import AirflowException
  from airflow.models.dag import DAG
  from airflow.providers.amazon.aws.operators.emr import EmrModifyClusterOperator
  from airflow.utils import timezone
label_desc: Use image node_id 1 for calling the TestEmrModifyClusterOperator obj's underlying member method code with example usage: obj.setup_method() without return types