class_docstr: Transformers that create new exog features from the endog or exog array
  
  Parameters
  ----------
  prefix : str or None, optional (default=None)
      The feature prefix
code: def _get_feature_names(self, X):
      pfx = self._get_prefix()
      return ["%s_%i" % (pfx, i) for i in range(X.shape[1])]
  
file_path: pmdarima/pmdarima/preprocessing/exog/base.py
imports: import pandas
  import numpy
  import abc
  from ..base import BaseTransformer
label_desc: Use image node_id 3 for calling the BaseExogFeaturizer obj's underlying member method code with example usage: obj._get_feature_names(X) and returns: unknown