@CanIgnoreReturnValue
        public AttestationBuilder vendorProperties(
            @NonNull final Optional<Map<String, String>> vendorProperties) {
            return this.vendorProperties(vendorProperties.orElse(null));
        }
Free-form information about the authenticator model.
support/cas-server-support-webauthn-core/src/main/java/com/yubico/webauthn/attestation/Attestation.java