def get_next_id(self):
        try:
            query = {'_id': 'last_id'}
            update = {'$inc': {'id': 1}}
            fn = self.db.internal.find_and_modify
            row = fn(query, update, upsert=True, new=True)
        except Exception as e:
            raise DatabaseException(e)
        return row['id']
def test_set_translation_reviewer_count_for_lang_code_adds_new_lang_key(
            self):
        community_contribution_stats = (
            suggestion_services.get_community_contribution_stats()
        )
        self._assert_community_contribution_stats_is_in_default_state()
        (
            community_contribution_stats
            .translation_reviewer_counts_by_lang_code
        ) = {'en': 1}

        (
            community_contribution_stats
            .set_translation_reviewer_count_for_language_code('hi', 2)
        )

        self.assertDictEqual(
            (
                community_contribution_stats
                .translation_reviewer_counts_by_lang_code
            ),
            {'en': 1, 'hi': 2}
        )