code: def test_model_common_attributes(self):
      (
          config,
          inputs_dict,
      ) = self.model_tester.prepare_config_and_inputs()
  
      for model_class in self.all_model_classes:
          model = model_class(config)
          self.assertIsInstance(
              model.get_input_embeddings(), (nn.Embedding)
          )
          model.set_input_embeddings(nn.Embedding(10, 10))
          x = model.get_output_embeddings()
          self.assertTrue(
              x is None or isinstance(x, nn.modules.sparse.Embedding)
          )
  
imports: import tempfile
  import unittest
  import timeout_decorator
  from parameterized import parameterized
  from transformers import FSMTConfig, is_torch_available
  from transformers.testing_utils import require_sentencepiece, require_tokenizers, require_torch, require_torch_fp16, slow, torch_device
  from transformers.utils import cached_property
  from ...generation.test_utils import GenerationTesterMixin
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, ids_tensor
  from ...test_pipeline_mixin import PipelineTesterMixin
label_desc: Use image node_id 3 for calling the FSMTModelTest obj's underlying member method code with example usage: obj.test_model_common_attributes() without return types