code: def test_model(self):
      pass
  
imports: import unittest
  from datasets import load_dataset
  from packaging import version
  from transformers import ViltConfig, is_torch_available, is_vision_available
  from transformers.models.auto import get_values
  from transformers.testing_utils import require_torch, require_vision, slow, torch_device
  from transformers.utils import cached_property
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor, random_attention_mask
label_desc: Use image node_id 2 for calling the ViltForImagesAndTextClassificationModelTest obj's underlying member method code with example usage: obj.test_model() without return types