code: def setUp(self):
      self.model_tester = DPRModelTester(self)
      self.config_tester = ConfigTester(
          self, config_class=DPRConfig, hidden_size=37
      )
  
imports: import tempfile
  import unittest
  from transformers import DPRConfig, is_torch_available
  from transformers.testing_utils import require_torch, slow, torch_device
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, ids_tensor, random_attention_mask
  from ...test_pipeline_mixin import PipelineTesterMixin
label_desc: Use image node_id 1 for calling the DPRModelTest obj's underlying member method code with example usage: obj.setUp() without return types