class_docstr: Class for a sample/label pair to be used in a `SortedList`.
code: def __eq__(self, other):
      return np.all(np.isclose(self.key, other.key))
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from functools import total_ordering
  import logging
  from typing import Callable, List, Optional, Union, Tuple, TYPE_CHECKING
  import numpy
  from art.estimators.estimator import BaseEstimator
  from art.estimators.regression.regressor import RegressorMixin, Regressor
  from art.estimators.classification import BlackBoxClassifier
label_desc: Use image node_id 2 for calling the FuzzyMapping obj's underlying member method code with example usage: obj.__eq__(other) and returns: np