challenge = $challenge; } public function getChallenge() { return $this->challenge; } public function setTtl($ttl) { $this->ttl = $ttl; } public function getTtl() { return $this->ttl; } } // Adding a class alias for backwards compatibility with the previous class name. class_alias(GoogleFirebaseAppcheckV1betaAppAttestChallengeResponse::class, 'Google_Service_Firebaseappcheck_GoogleFirebaseAppcheckV1betaAppAttestChallengeResponse');