code: def setUp(self):
      self.model_tester = CTRLModelTester(self)
      self.config_tester = ConfigTester(
          self, config_class=CTRLConfig, n_embd=37
      )
  
imports: import gc
  import unittest
  from transformers import CTRLConfig, is_torch_available
  from transformers.testing_utils import require_torch, slow, torch_device
  from ...generation.test_generation_utils import GenerationTesterMixin
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, ids_tensor, random_attention_mask
label_desc: Use image node_id 1 for calling the CTRLModelTest obj's underlying member method code with example usage: obj.setUp() without return types