public KubernetesEndpointGroupBuilder serviceName(String serviceName) {
        this.serviceName = requireNonNull(serviceName, "serviceName");
        return this;
    }
Sets the target <a href="https://kubernetes.io/docs/concepts/services-networking/service/">service</a>
name from which {@link Endpoint}s should be fetched.
kubernetes/src/main/java/com/linecorp/armeria/client/kubernetes/endpoints/KubernetesEndpointGroupBuilder.java