code: def test_default_params():
      transformer = DatetimeFeatures()
      assert isinstance(transformer, DatetimeFeatures)
      assert transformer.variables is None
      assert transformer.features_to_extract is None
      assert transformer.drop_original
      assert transformer.utc is None
      assert transformer.dayfirst is False
      assert transformer.yearfirst is False
      assert transformer.missing_values == "raise"
  
imports: import numpy
  import pandas
  import pytest
  from sklearn.exceptions import NotFittedError
  from sklearn.pipeline import Pipeline
  from feature_engine.datetime import DatetimeFeatures
  from feature_engine.datetime._datetime_constants import FEATURES_DEFAULT, FEATURES_SUFFIXES, FEATURES_SUPPORTED
label_desc: Use image node_id 2 for calling a global function with example usage: test_default_params() without return types