code: def create_kernel_no_ard(self, num_dims=2, **kwargs):
      return SpectralDeltaKernel(
          num_dims=num_dims, num_deltas=64, **kwargs
      )
  
file_path: gpytorch/test/kernels/test_spectral_delta_kernel.py
imports: import unittest
  import torch
  from gpytorch.kernels import SpectralDeltaKernel
  from gpytorch.test.base_kernel_test_case import BaseKernelTestCase
label_desc: Use image node_id 1 for calling the TestSpectralDeltaKernel obj's underlying member method code with example usage: obj.create_kernel_no_ard(num_dims) and returns: SpectralDeltaKernel