@Override
    public NacosEndpointGroupBuilder namespaceId(String namespaceId) {
        nacosClientBuilder.namespaceId(namespaceId);
        return this;
    }
Sets the {@link EndpointSelectionStrategy} of the {@link NacosEndpointGroup}.
nacos/src/main/java/com/linecorp/armeria/client/nacos/NacosEndpointGroupBuilder.java