code: def test_build_opsgenie_payload(self):
      # Given / When
      operator = OpsgenieCloseAlertOperator(
          task_id="opsgenie_close_alert_job",
          identifier="id",
          dag=self.dag,
          **self._config,
      )
  
      payload = operator._build_opsgenie_close_alert_payload()
  
      # Then
      assert self.expected_payload_dict == payload
  
file_path: airflow/tests/providers/opsgenie/operators/test_opsgenie.py
imports: from __future__ import annotations
  from unittest import mock
  from airflow.models.dag import DAG
  from airflow.providers.opsgenie.operators.opsgenie import OpsgenieCloseAlertOperator, OpsgenieCreateAlertOperator, OpsgenieDeleteAlertOperator
  from airflow.utils import timezone
label_desc: Use image node_id 2 for calling the TestOpsgenieCloseAlertOperator obj's underlying member method code with example usage: obj.test_build_opsgenie_payload() without return types