@Nullable
    private static Endpoint toEndpoint(Host host) {
        if (Boolean.FALSE.equals(host.enabled)) {
            return null;
        } else if (host.weight != null && host.weight.intValue() >= 0) {
            return Endpoint.of(host.ip, host.port).withWeight(host.weight.intValue());
        } else {
            return Endpoint.of(host.ip, host.port);
        }
    }
A Nacos client that is responsible for
<a href="https://nacos.io/en-us/docs/v2/guide/user/open-api.html">Nacos Open-Api - Query instances</a>.
nacos/src/main/java/com/linecorp/armeria/internal/nacos/QueryInstancesClient.java