code: def test_get_conn(self):
      hook = AdminClientHook(azure_service_bus_conn_id=self.conn_id)
      assert isinstance(hook.get_conn(), ServiceBusAdministrationClient)
  
imports: from __future__ import annotations
  from unittest import mock
  import pytest
  from airflow.models import Connection
  from airflow.providers.microsoft.azure.hooks.asb import AdminClientHook, MessageHook
label_desc: Use image node_id 2 for calling the TestAdminClientHook obj's underlying member method code with example usage: obj.test_get_conn() without return types