referenceIndex = $referenceIndex; } /** * @return string */ public function getReferenceIndex() { return $this->referenceIndex; } } // Adding a class alias for backwards compatibility with the previous class name. class_alias(GoogleCloudDiscoveryengineV1SearchResponseSummaryCitationSource::class, 'Google_Service_DiscoveryEngine_GoogleCloudDiscoveryengineV1SearchResponseSummaryCitationSource');