code: def create_data_double_batch(self):
      return torch.rand(3, 2, 50, 2) / math.sqrt(2)
  
file_path: gpytorch/test/kernels/test_cylindrical_kernel.py
imports: import math
  import unittest
  import torch
  from gpytorch.kernels import CylindricalKernel, MaternKernel
  from gpytorch.priors import NormalPrior
  from gpytorch.test.base_kernel_test_case import BaseKernelTestCase
label_desc: Use image node_id 4 for calling the TestCylindricalKernel obj's underlying member method code with example usage: obj.create_data_double_batch() and returns: unknown