code: def test_400m(self):
      SelfChat.main(
          model_file="zoo:seeker/seeker_dialogue_400M/model",
          num_self_chats=1,
          init_opt="gen/seeker_dialogue",
          search_decision="never",
          search_server="none",
          krm_force_skip_retrieval=True,
      )
  
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 1 for calling the TestSeekerSelfChat obj's underlying member method code with example usage: obj.test_400m() without return types