code: def create_model(self, train_x, train_y, likelihood):
      model = ExactGPModel(train_x, train_y, likelihood)
      return model
  
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 1 for calling the TestExactGP obj's underlying member method code with example usage: obj.create_model(train_x, train_y, likelihood) and returns: model