code: def test_fantasy_model(self):
      x = self.create_test_data()
      likelihood, labels = self.create_likelihood_and_labels()
      model = self.create_model(x, labels, likelihood)
      test_x = self.create_test_data()
      _, test_labels = self.create_likelihood_and_labels()
      with torch.no_grad():
          model.eval()
          model(test_x)
      new_model = model.get_fantasy_model(test_x, test_labels)
  
      self.assertEqual(type(new_model), type(model))
      self.assertTrue(new_model.prediction_strategy.uses_wiski)
  
imports: import unittest
  import torch
  import gpytorch
  from gpytorch import settings
  from gpytorch.kernels import GridInterpolationKernel
  from gpytorch.likelihoods import GaussianLikelihood
  from gpytorch.mlls import ExactMarginalLogLikelihood
  from gpytorch.models import ExactGP
  from gpytorch.models.exact_prediction_strategies import InterpolatedPredictionStrategy
  from gpytorch.test.model_test_case import BaseModelTestCase
label_desc: Use image node_id 2 for calling the TestWiskiExactGP obj's underlying member method code with example usage: obj.test_fantasy_model() without return types