code: def setUp(self):
      self.model_tester = GPTSanJapaneseTester(self)
      self.config_tester = ConfigTester(
          self, config_class=GPTSanJapaneseConfig, d_model=37
      )
  
imports: import unittest
  import numpy
  from transformers import GPTSanJapaneseConfig, GPTSanJapaneseForConditionalGeneration, GPTSanJapaneseModel, GPTSanJapaneseTokenizer, is_torch_available
  from transformers.generation import GenerationConfig
  from transformers.testing_utils import require_torch, slow, tooslow, torch_device
  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 2 for calling the GPTSanJapaneseTest obj's underlying member method code with example usage: obj.setUp() without return types