class_docstr: Defines a set of values of interest for a particular feature along with an associated sub-score.
code: def feature(self) -> Feature:
      return self._feature
  
imports: import abc
  from numbers import Real
  from typing import Dict, Set, Any, Optional
  from aix360.algorithms.rule_induction.trxf.core import Feature
label_desc: Use image node_id 7 for calling the Bin obj's underlying member method code with example usage: obj.feature() and returns: self