code: def test_ed(self):
      SelfChat.main(
          task="empathetic_dialogues",
          model="fixed_response",
          fixed_response="hi",
          seed_messages_from_task=True,
      )
  
file_path: ParlAI/tests/test_self_chat.py
imports: from tempfile import NamedTemporaryFile
  import unittest
  from parlai.scripts.self_chat import SelfChat
  import parlai.utils.testing
label_desc: Use image node_id 3 for calling the TestSelfChat obj's underlying member method code with example usage: obj.test_ed() without return types