@UnstableApi
    public DnsResolverGroupBuilder enableAutoRefresh(boolean autoRefresh) {
        this.autoRefresh = autoRefresh;
        return this;
    }
Sets whether to enable auto refresh for expired {@link DnsRecord}s.
This option is enabled by default.

<p>If this option is disabled, the expired {@link DnsRecord} is removed from the {@link DnsCache} and a
new {@link DnsQuery} will be executed when the next request to the domain is made.
core/src/main/java/com/linecorp/armeria/client/DnsResolverGroupBuilder.java