@Override
    public void unSubscribe(ConsumerConfig config) {
        if (config.isSubscribe()) {
            SharedIndexInformer<Pod> informer = consumerListeners.remove(config);
            if (null != informer) {
                informer.stop();
            }
        }

        kubernetesRegistryProviderWatcher.removeProviderListener(config);
    }
Instantiates a new kubernetes registry.

@param registryConfig
registry/registry-kubernetes/src/main/java/com/alipay/sofa/rpc/registry/kubernetes/KubernetesRegistry.java