code: def test_exact() -> None:
      exact = dict(foo="stuff", bar=10)
      o = DummyOpts(exact)
      assert o.foo == "stuff"
      assert o.bar == 10
      assert exact == {}
  
file_path: bokeh/tests/unit/bokeh/util/test_options.py
imports: from __future__ import annotations
  import pytest
  from bokeh.core.properties import Int, Nullable, String
  from bokeh.util.options import Options
label_desc: Use image node_id 2 for calling a global function with example usage: test_exact() without return types