code: def test_blenderbot(self):
      opt = {
          "model_file": R2C2_BLENDERBOT_400M,
          "task": "integration_tests:nocandidate",
          "init_opt": "gen/blenderbot",
          "num_examples": 2,
          "datatype": "valid",
      }
      ems.EvalModel.main(**opt)
  
file_path: ParlAI/tests/nightly/gpu/test_seeker.py
imports: import unittest
  import parlai.scripts.eval_model
  from parlai.scripts.self_chat import SelfChat
  import parlai.utils.testing
label_desc: Use image node_id 2 for calling the TestR2C2Zoo obj's underlying member method code with example usage: obj.test_blenderbot() without return types