text: # -*- coding: utf-8 -*-
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  """
  Example usage of the TriggerDagRunOperator. This example holds 2 DAGs:
  1. 1st DAG (example_trigger_controller_dag) holds a TriggerDagRunOperator, which will trigger the 2nd DAG
  2. 2nd DAG (example_trigger_target_dag) which will be triggered by the TriggerDagRunOperator in the 1st DAG
  """
  
  from airflow import DAG
  from airflow.operators.dagrun_operator import TriggerDagRunOperator
  from airflow.utils.dates import days_ago
  
  dag = DAG(
      dag_id="example_trigger_controller_dag",
      default_args={"owner": "airflow", "start_date": days_ago(2)},
      schedule_interval="@once",
  )
  
  trigger = TriggerDagRunOperator(
      task_id="test_trigger_dagrun",
      trigger_dag_id="example_trigger_target_dag",  # Ensure this equals the dag_id of the DAG to trigger
      conf={"message": "Hello World"},
      dag=dag,
  )
  