code: def create_kernel_ard(self, num_dims, **kwargs):
      return RBFKernelGrad(ard_num_dims=num_dims, **kwargs)
  
file_path: gpytorch/test/kernels/test_rbf_kernel_grad.py
imports: import unittest
  import torch
  from gpytorch.kernels import RBFKernelGrad
  from gpytorch.test.base_kernel_test_case import BaseKernelTestCase
label_desc: Use image node_id 2 for calling the TestRBFKernelGrad obj's underlying member method code with example usage: obj.create_kernel_ard(num_dims) and returns: RBFKernelGrad