public List<String> put(final String namespace,
                            final String name,
                            final String pluginName,
                            final String selectorId) {
        List<String> selectorIdList = SELECTOR_MAP.computeIfAbsent(getKey(namespace, name, pluginName), k -> new ArrayList<>());
        selectorIdList.add(selectorId);
        return SELECTOR_MAP.put(getKey(namespace, name, pluginName), selectorIdList);
    }
Put selector id by ingress.

@param namespace namespace
@param name name
@param pluginName plugin name
@param selectorId selector id
@return the previous selector id list
shenyu-kubernetes-controller/src/main/java/org/apache/shenyu/k8s/cache/IngressSelectorCache.java