def test_postApproved(self):
        group = "example.group"
        moderator = "alice@example.com"
        mailhost = "127.0.0.1"
        sender = "bob@example.org"
        articleID = messageid()
        storage = self.getStorage(
            [group], {group: [moderator]}, mailhost, sender)
        message = self.getApprovedMessage(articleID, group)
        result = storage.postRequest(message)

        def cbPosted(ignored):
            self.assertEqual(self._email, [])
            exists = storage.articleExistsRequest(articleID)
            exists.addCallback(self.assertTrue)
            return exists
        result.addCallback(cbPosted)
        return result
Use the connection objects delayed_call function which is
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/news/test/test_database.py/ModerationTestsMixin.test_postApproved--crossover with--dataset/ETHPy150Open pika/pika/pika/heartbeat.py/HeartbeatChecker._setup_timer