def __init__(self, lower_bound: float, upper_bound: float) -> None:
        """
        An interval of a feature.

        :param lower_bound: The lower boundary of the feature.
        :param upper_bound: The upper boundary of the feature.
        """
        self.lower_bound = lower_bound
        self.upper_bound = upper_bound

        An interval of a feature.

        :param lower_bound: The lower boundary of the feature.
        :param upper_bound: The upper boundary of the feature.
        
art/metrics/verification_decisions_trees.py