Does the passkey created using third party provider model get synced to iCloud Keychain? If yes, can we avoid that using the attestation object somehow to have it ties to the device where it was created? Being new to this domain, I am not sure if I am asking a right question.

We are trying to support Passkey Management in our app with the latest iOS 17 Passkey Autofill. During this process, we have a few doubts and queries: First, we have configured the AutoFill extension for external passkey management Next we used the 'prepareInterface(forPasskeyRegistration:' delegate for passkey generation We are facing an issue on creating the attestationObject for ‘ASPasskeyRegistrationCredential’. Here, we’re not sure if we need to create the attestationObject [if so any documentation or help regarding this] or is there any API to get the attestationObject which we are missing. override func prepareInterface(forPasskeyRegistration registrationRequest: ASCredentialRequest) { let request = registrationRequest as! ASPasskeyCredentialRequest let passkeyRegistration = ASPasskeyRegistrationCredential(relyingParty: request.credentialIdentity.serviceIdentifier.identifier, clientDataHash: request.clientDataHash, credentialID: Data(UUID().uuidString.utf8), attestationObject: "????") extensionContext.completeRegistrationRequest(using: passkeyRegistration) } Even we have tried passing the hardcoded attestationObject[we used the existing attestationObject received using icloud keychain] , still we got empty ‘ClientDataJSON’ on ‘authorizationController(controller:’ delegate.