code: def test_model_from_pretrained(self):
      for model_name in LAYOUTLMV2_PRETRAINED_MODEL_ARCHIVE_LIST[:1]:
          model = LayoutLMv2Model.from_pretrained(model_name)
          self.assertIsNotNone(model)
  
imports: import os
  import random
  import tempfile
  import unittest
  from transformers.testing_utils import require_detectron2, require_torch, require_torch_multi_gpu, slow, torch_device
  from transformers.utils import is_detectron2_available, is_torch_available
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, _config_zero_init, ids_tensor, random_attention_mask
label_desc: Use image node_id 12 for calling the LayoutLMv2ModelTest obj's underlying member method code with example usage: obj.test_model_from_pretrained() without return types