private static String serializedValue(EndpointCertificateMetadata.Provider provider) {
        return switch (provider) {
            case digicert -> "digicert";
            case globalsign -> "globalsign";
            case zerossl -> "zerossl";
            case letsencrypt -> "letsencrypt";
        };
    }
(de)serializes endpoint certificate metadata

@author andreer
configserver/src/main/java/com/yahoo/vespa/config/server/tenant/EndpointCertificateMetadataSerializer.java