code: def tearDown(self):
      if hasattr(self, "rng_state"):
          torch.set_rng_state(self.rng_state)
  
imports: import os
  import random
  import unittest
  from math import exp, pi
  import torch
  from torch import optim
  import gpytorch
  from gpytorch.distributions import MultivariateNormal
  from gpytorch.kernels import RBFKernel, ScaleKernel
  from gpytorch.likelihoods import BernoulliLikelihood
  from gpytorch.means import ConstantMean
  from gpytorch.priors import SmoothedBoxPrior
label_desc: Use image node_id 2 for calling the TestKISSGPClassification obj's underlying member method code with example usage: obj.tearDown() without return types