public SELF enableDnsQueryMetrics(boolean enable) {
        dnsQueryMetricsEnabled = enable;
        return self();
    }
Enables the default {@link DnsQueryLifecycleObserverFactory} that collects DNS query
metrics through {@link MeterRegistry}. This option is enabled by default.
core/src/main/java/com/linecorp/armeria/client/AbstractDnsResolverBuilder.java