public Builder endpointCertificateMetadata(String serialized) {
            this.endpointCertificateMetadata = (serialized == null)
                    ? Optional.empty()
                    : Optional.of(EndpointCertificateMetadataSerializer.fromSlime(SlimeUtils.jsonToSlime(serialized).get()));
            return this;
        }
Parameters for preparing an application. Immutable.

@author Ulf Lilleengen
configserver/src/main/java/com/yahoo/vespa/config/server/session/PrepareParams.java