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 _lastExpect(self):
        constructLine = self.previousExpectLine
        if self._connection is not None and isinstance(self._connection.before, str):
            constructLine += self._connection.before
        if self._connection is not None and isinstance(self._connection.after, str):
            constructLine += self._connection.after
        return  constructLine