def get_docs_to_commit(self):
        try:
            spec = {'synced': False}
            fields = {'_id': 0}
            cur = self.db.docs.find(spec, fields)
        except Exception as e:
            raise DatabaseException(e)
        return list(cur)
def __repr__(self):
        return "<differencematcher m1=%r, m2=%r>" % (self._m1, self._m2)