code: def test_gradient_nonkeops_ard(self):
      self.test_gradient(use_keops=False, ard=True)
  
imports: from abc import abstractmethod
  from unittest.mock import patch
  import torch
  import gpytorch
  from .base_test_case import BaseTestCase
label_desc: Use image node_id 16 for calling the BaseKeOpsTestCase obj's underlying member method code with example usage: obj.test_gradient_nonkeops_ard() without return types