final long selectionTimeoutMillis() {
        return dnsDynamicEndpointGroupBuilder.selectionTimeoutMillis();
    }
Sets the timeout to wait until a successful {@link Endpoint} selection.
{@code 0} disables the timeout.
If unspecified, the default DNS query timeout ({@link DnsUtil#DEFAULT_DNS_QUERY_TIMEOUT_MILLIS} ms) is
used by default.
core/src/main/java/com/linecorp/armeria/client/endpoint/dns/DnsEndpointGroupBuilder.java