code: def test_preprocessing_dtype(self):
      super(
          PolynomialFeaturesComponentTest, self
      )._test_preprocessing_dtype(PolynomialFeatures, test_sparse=False)
  
file_path: auto-sklearn/test/test_pipeline/components/feature_preprocessing/test_polynomial.py
imports: import sklearn.metrics
  from sklearn.tree import DecisionTreeClassifier
  from autosklearn.pipeline.components.feature_preprocessing.polynomial import PolynomialFeatures
  from autosklearn.pipeline.util import PreprocessingTestCase, _test_preprocessing, get_dataset
label_desc: Use image node_id 4 for calling the PolynomialFeaturesComponentTest obj's underlying member method code with example usage: obj.test_preprocessing_dtype() without return types