def save(self, doc):
        if doc.id:
            return self.update(doc)
        else:
            return self.insert(doc)
def execute(self, sql, params=None):
        result = self._no_monkey.execute(self, sql, params)
        if transaction_states[self.db.alias] and is_sql_dirty(sql):
            transaction_states[self.db.alias].mark_dirty()
        return result