code: def test_MockModel(self):
      mp = MockPosterior()
      mm = MockModel(mp)
      X = torch.empty(0)
      self.assertEqual(mm.posterior(X), mp)
      self.assertEqual(mm.num_outputs, 0)
      mm.state_dict()
      mm.load_state_dict()
  
imports: import torch
  from botorch.utils.testing import BotorchTestCase, MockModel, MockPosterior
label_desc: Use image node_id 2 for calling the TestMock obj's underlying member method code with example usage: obj.test_MockModel() without return types