code: def test_valid(self) -> None:
      prop = bcpp.PandasDataFrame()
      assert prop.is_valid(pd.DataFrame())
  
file_path: bokeh/tests/unit/bokeh/core/property/test_pd.py
imports: from __future__ import annotations
  import pytest
  import pandas
  from tests.support.util.api import verify_all
  from _util_property import _TestHasProps, _TestModel
  import bokeh.core.property.pd
label_desc: Use image node_id 1 for calling the Test_PandasDataFrame obj's underlying member method code with example usage: obj.test_valid() without return types