payloadFormat = $payloadFormat; } public function getPayloadFormat() { return $this->payloadFormat; } public function setTopicName($topicName) { $this->topicName = $topicName; } public function getTopicName() { return $this->topicName; } } // Adding a class alias for backwards compatibility with the previous class name. class_alias(CloudPubsubTopic::class, 'Google_Service_AlertCenter_CloudPubsubTopic');