code: def test_half_cauchy_prior_batch_log_prob_cuda(self):
      if torch.cuda.is_available():
          with least_used_cuda_device():
              return self.test_half_cauchy_prior_batch_log_prob(
                  cuda=True
              )
  
file_path: gpytorch/test/priors/test_half_cauchy_prior.py
imports: import unittest
  import torch
  from torch.distributions import HalfCauchy
  from gpytorch.priors import HalfCauchyPrior
  from gpytorch.test.utils import least_used_cuda_device
label_desc: Use image node_id 8 for calling the TestHalfCauchyPrior obj's underlying member method code with example usage: obj.test_half_cauchy_prior_batch_log_prob_cuda() and returns: self