def METHOD_NAME(self, child, **kwargs):
    """
        Initializes the Automaton.
        Receives the TAP interface that is being
        used as a keyword argument (`iface`).
        Also generates a randomized prefix for
        SLAAC testing.
    """
    super().METHOD_NAME(**kwargs)
    self.child = child
    self.iface = kwargs["iface"]
    self.prefix = "2001:db8:{:x}:{:x}::".format(
        random.randint(0, 0xFFFF), random.randint(0, 0xFFFF)
    )