code: def teardown_class(cls):
      from ext_package_no_main import AModel
  
      _default_resolver.remove(AModel)
      extension_dirs.clear()
  
imports: from __future__ import annotations
  import pytest
  from os.path import dirname, join
  from bokeh import models
  from bokeh.core.has_props import _default_resolver
  from bokeh.document import Document
  from bokeh.embed.bundle import URL, extension_dirs
  from bokeh.ext import build
  from bokeh.resources import CDN, INLINE, Resources
  from tests.support.util.env import envset
  import bokeh.embed.bundle
label_desc: Use image node_id 2 for calling the Test_bundle_ext_package_no_main obj's underlying member method code with example usage: obj.teardown_class(cls) without return types