code: def test_default_server_hooks_return_none(self) -> None:
      h = bahh.Handler()
      assert h.on_server_loaded("context") is None
      assert h.on_server_unloaded("context") is None
  
file_path: bokeh/tests/unit/bokeh/application/handlers/test_handler.py
imports: from __future__ import annotations
  import pytest
  import bokeh.application.handlers.handler
label_desc: Use image node_id 3 for calling the Test_Handler obj's underlying member method code with example usage: obj.test_default_server_hooks_return_none() without return types