code: def create_data_double_batch(self):
      return torch.randn(3, 2, 50, 2)
  
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 5 for calling the TestSpectralDeltaKernel obj's underlying member method code with example usage: obj.create_data_double_batch() and returns: torch