code: def test_nonbatch_to_multibatch_fantasy_model(self):
      self.test_nonbatch_to_batch_fantasy_model(
          batch_shape=torch.Size([2, 3])
      )
  
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 4 for calling the TestWiskiExactGP obj's underlying member method code with example usage: obj.test_nonbatch_to_multibatch_fantasy_model() without return types