code: def test_valid(self) -> None:
      prop = bcpd.Time()
      assert prop.is_valid(datetime.time(19, 34, 57))
      assert prop.is_valid("19:34:57")
  
imports: from __future__ import annotations
  import pytest
  import datetime
  import numpy
  import pandas
  from bokeh.util.serialization import convert_date_to_datetime
  from tests.support.util.api import verify_all
  from _util_property import _TestHasProps, _TestModel
  import bokeh.core.property.datetime
label_desc: Use image node_id 1 for calling the Test_Time obj's underlying member method code with example usage: obj.test_valid() without return types