IssuerSpec
constructor(provisioning: Provisioning = Provisioning.FACTORY, securityLevel: @Serializable(with = SecurityLevelAsName::class) AttestationKeyDescription.SecurityLevel = SecurityLevel.TRUSTED_ENVIRONMENT, root: RootSpec? = null, issuedAt: @Serializable(with = InstantAsIso8601::class) Instant = Clock.System.now(), validity: @Serializable(with = DurationAsIso8601::class) Duration = 365.days)(source)