code: def test_model(self):
      config_and_inputs = (
          self.model_tester.prepare_config_and_inputs_for_common()
      )
      self.model_tester.create_and_check_model(*config_and_inputs)
  
imports: import inspect
  import unittest
  import numpy
  from transformers import TrajectoryTransformerConfig, is_torch_available
  from transformers.testing_utils import require_torch, slow, torch_device
  from ...generation.test_generation_utils import GenerationTesterMixin
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, _config_zero_init, random_attention_mask
label_desc: Use image node_id 3 for calling the TrajectoryTransformerModelTest obj's underlying member method code with example usage: obj.test_model() without return types