code: def create_kernel_ard(self, num_dims, **kwargs):
      base_kernel = RBFKernel(ard_num_dims=num_dims)
      kernel = ScaleKernel(base_kernel, **kwargs)
      return kernel
  
imports: import pickle
  import unittest
  import torch
  from gpytorch.kernels import LinearKernel, RBFKernel, ScaleKernel
  from gpytorch.priors import NormalPrior
  from gpytorch.test.base_kernel_test_case import BaseKernelTestCase
label_desc: Use image node_id 2 for calling the TestScaleKernel obj's underlying member method code with example usage: obj.create_kernel_ard(num_dims) and returns: kernel