    def initialize(self):
        """
        Initializes any components of the Attacker that are expensive to compute, so that they are
        not created on __init__().  Default implementation is `pass`.
        """
        pass
Initializes any components of the Attacker that are expensive to compute, so that they are
not created on __init__().  Default implementation is `pass`.
allennlp/interpret/attackers/attacker.py