code: def setUp(self):
      self.model_tester = FSMTModelTester(self)
      self.langs = ["en", "ru"]
      config = {
          "langs": self.langs,
          "src_vocab_size": 10,
          "tgt_vocab_size": 20,
      }
      # XXX: hack to appease to all other models requiring `vocab_size`
      config["vocab_size"] = 99  # no such thing in FSMT
      self.config_tester = ConfigTester(
          self, config_class=FSMTConfig, **config
      )
  
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, slow, torch_device
  from transformers.utils import cached_property
  from ...generation.test_generation_utils import GenerationTesterMixin
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, ids_tensor
label_desc: Use image node_id 1 for calling the FSMTModelTest obj's underlying member method code with example usage: obj.setUp() without return types