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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 dump(self):
 """Serialize note data. Args: state (dict):
 Serialized state to load. """

        # Find all nodes manually, as the Keep object isn't aware of new ListItems
        # until they've been synced to the server.
        nodes = []
        for node in self.all():
            nodes.append(node)
            for child in node.children:
                nodes.append(child)
        return {
            'keep_version': self._keep_version,
            'labels': [label.save(False) for label in self.labels()],
            'nodes': [node.save(False) for node in nodes]
        }