@Override
    public void onStateChanged(String circuitBreakerName, CircuitState state) {
        metricsOf(circuitBreakerName).onStateChanged(state);
    }
Creates a new instance with the specified {@link Meter} name.
core/src/main/java/com/linecorp/armeria/client/circuitbreaker/MetricCollectingCircuitBreakerListener.java