docstr: Dataset names requested by feature engineering step callable :attr:`f`. See documentation
  in :meth:`EngineerStep.__init__` for more information/restrictions
code: def params(self) -> tuple:
      """Dataset names requested by feature engineering step callable :attr:`f`. See documentation
      in :meth:`EngineerStep.__init__` for more information/restrictions
      """
      return self._params
  
imports: from hyperparameter_hunter.keys.hashing import make_hash_sha256
  from hyperparameter_hunter.space.dimensions import Categorical, RejectedOptional
  from hyperparameter_hunter.utils.boltons_utils import remap, default_visit, default_enter
  from hyperparameter_hunter.utils.general_utils import subdict
  import ast
  from contextlib import suppress
  from inspect import getsource
  import numpy
  import pandas
  from typing import List, Callable, Dict, Union, Tuple
label_desc: Use image node_id 8 for calling the EngineerStep obj's underlying member method code with example usage: obj.params() and returns: self