code: def setUp(self):
      test_utils.setup_proxy()
      setup_imports()
      model_name = "mmbt"
      args = test_utils.dummy_args(model=model_name)
      configuration = Configuration(args)
      config = configuration.get_config()
      model_config = config.model_config[model_name]
      model_config["training_head_type"] = "classification"
      model_config["num_labels"] = 2
      model_config.model = model_name
      self.model_config = model_config
  
imports: import gc
  import unittest
  import tests.test_utils
  import torch
  from mmf.common.sample import Sample, SampleList
  from mmf.models.mmbt import MMBT
  from mmf.modules.encoders import ImageEncoderFactory, ImageEncoderTypes, ResNet152ImageEncoder, TextEncoderFactory, TextEncoderTypes
  from mmf.modules.hf_layers import undo_replace_with_jit
  from mmf.utils.build import build_model
  from mmf.utils.configuration import Configuration
  from mmf.utils.env import setup_imports, teardown_imports
  from omegaconf import OmegaConf
label_desc: Use image node_id 1 for calling the TestMMBTTorchscript obj's underlying member method code with example usage: obj.setUp() without return types