def __init__(self, positive, negative):
        
        self.positive = positive
        self.negative = negative
        self.id = None
        self._find_next()
Compute the message to a parent node.
dataset/ETHPy150Open dokipen/whoosh/src/whoosh/postings.py/AndNotScorer.__init__--crossover with--dataset/ETHPy150Open bayespy/bayespy/bayespy/inference/vmp/nodes/poisson.py/PoissonDistribution.compute_message_to_parent