public static PrometheusExpositionServiceBuilder builder(PrometheusRegistry prometheusRegistry) {
        return new PrometheusExpositionServiceBuilder(
                requireNonNull(prometheusRegistry, "prometheusRegistry"));
    }
Returns a new {@link PrometheusExpositionServiceBuilder} created with the specified
{@link PrometheusRegistry}.
prometheus1/src/main/java/com/linecorp/armeria/server/prometheus/PrometheusExpositionService.java