code: def test_speaker_selection_method():
      for method in [
          "auto",
          "round_robin",
          "random",
          "manual",
          "wrong",
          "RounD_roBin",
      ]:
          _test_selection_method(method)
  
file_path: autogen/test/agentchat/test_groupchat.py
imports: import pytest
  from unittest import mock
  import builtins
  import autogen
  import json
label_desc: Use image node_id 4 for calling a global function with example usage: test_speaker_selection_method() without return types