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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _node_participation_settings(self):
 """ Return node_participation_settings record or create it if it does not exist usage: node = Node.objects.get(pk=1) node.participation_settings """

    try:
        return self.node_participation_settings
    except ObjectDoesNotExist:
        node_participation_settings = NodeParticipationSettings(node=self)
        node_participation_settings.save()
        return node_participation_settings