code: def _test_hierarchy_flow_using_select_speaker(save=False):
      # TODO: recover this test after rewriting after the new group chat api
      run_notebook(
          "agentchat_hierarchy_flow_using_select_speaker.ipynb",
          save=save,
      )
  
file_path: autogen/test/test_notebook.py
imports: import sys
  import os
  import pytest
  from conftest import skip_openai
label_desc: Use image node_id 9 for calling a global function with example usage: _test_hierarchy_flow_using_select_speaker(save) without return types