private CircuitBreakerMetrics metricsOf(String circuitBreakerName) {
        final MeterIdPrefix idPrefix = new MeterIdPrefix(name, "name", circuitBreakerName);
        return MicrometerUtil.register(registry, idPrefix,
                                       CircuitBreakerMetrics.class,
                                       CircuitBreakerMetrics::new);
    }
Creates a new instance with the specified {@link Meter} name.
core/src/main/java/com/linecorp/armeria/client/circuitbreaker/MetricCollectingCircuitBreakerListener.java