code: def test_is_datetime_type_pandas_types() -> None:
      assert bus.is_datetime_type(pd.Timestamp(3000000))
      assert bus.is_datetime_type(pd.Period("1900", "A-DEC"))
      assert bus.is_datetime_type(pd.NaT)
  
imports: from __future__ import annotations
  import pytest
  import datetime
  from math import inf, nan
  import numpy
  import pandas
  import pytz
  from tests.support.util.env import envset
  import bokeh.util.serialization
label_desc: Use image node_id 11 for calling a global function with example usage: test_is_datetime_type_pandas_types() without return types