code: def test_smoothed_box_prior_log_prob_cuda(self):
      if torch.cuda.is_available():
          with least_used_cuda_device():
              return self.test_smoothed_box_prior_log_prob(cuda=True)
  
file_path: gpytorch/test/priors/test_smoothed_box_prior.py
imports: import math
  import unittest
  import torch
  from gpytorch.priors import SmoothedBoxPrior
  from gpytorch.test.utils import approx_equal, least_used_cuda_device
label_desc: Use image node_id 4 for calling the TestSmoothedBoxPrior obj's underlying member method code with example usage: obj.test_smoothed_box_prior_log_prob_cuda() and returns: self