code: def test_success(self) -> None:
      assert dep.import_required("sys", "yep") is not None
  
file_path: bokeh/tests/unit/bokeh/util/test_dependencies.py
imports: from __future__ import annotations
  import pytest
  import numpy
  import pandas
  import bokeh.util.dependencies
label_desc: Use image node_id 1 for calling the Test_import_required obj's underlying member method code with example usage: obj.test_success() without return types