code: def get_feature_names(self) -> List[str]:
      warnings.warn(
          "`get_feature_names` is deprecated in all of sklearn. Use `get_feature_names_out` instead.",
          category=FutureWarning,
      )
      return self.get_feature_names_out()
  
imports: from abc import abstractmethod
  from enum import Enum, auto
  import warnings
  import pandas
  import numpy
  import sklearn.base
  from pandas.api.types import is_object_dtype, is_string_dtype, is_numeric_dtype
  from pandas.core.dtypes.dtypes import CategoricalDtype
  from sklearn.base import BaseEstimator, TransformerMixin
  from sklearn.exceptions import NotFittedError
  from typing import Dict, List, Optional, Union
  from scipy.sparse import csr_matrix
  from sklearn.preprocessing import LabelEncoder
label_desc: Use image node_id 7 for calling the BaseEncoder obj's underlying member method code with example usage: obj.get_feature_names() and returns: self