def insert(self, doc, synced=False):
        doc.id = self.get_next_id()
        doc.synced = synced
        try:
            self.db.docs.insert(doc)
        except Exception as e:
            raise DatabaseException(e)
        return doc
def __init__(self, choices=None, optional=False):
        super().__init__(
            minimum=0, maximum=2 ** 16 - 1, choices=choices, optional=optional
        )