public static PrometheusMeterRegistry newRegistry(PrometheusRegistry registry, Clock clock) {
        return new PrometheusMeterRegistry(
                PrometheusConfig.DEFAULT, requireNonNull(registry, "registry"), requireNonNull(clock, "clock"));
    }
Returns a newly-created {@link PrometheusMeterRegistry} instance with the specified
{@link PrometheusRegistry} and {@link Clock}.
prometheus1/src/main/java/com/linecorp/armeria/common/prometheus/PrometheusMeterRegistries.java