code: def test_init(self) -> None:
      ac = bsc.ApplicationContext("app", io_loop="ioloop")
      c = bsc.BokehServerContext(ac)
      assert c.application_context == ac
      assert len(gc.get_referrers(ac)) == 0
  
file_path: bokeh/tests/unit/bokeh/server/test_contexts.py
imports: from __future__ import annotations
  import pytest
  import asyncio
  import gc
  from tornado.ioloop import IOLoop
  from bokeh.application import Application
  import bokeh.server.contexts
label_desc: Use image node_id 1 for calling the TestBokehServerContext obj's underlying member method code with example usage: obj.test_init() without return types