@Override
    public void removeSelector(final SelectorData selectorData) {
        UpstreamCacheManager.getInstance().removeByKey(selectorData.getId());
        CACHED_HANDLE.get().removeHandle(CacheKeyUtils.INST.getKey(selectorData.getId(), Constants.DEFAULT_RULE));
    }
The type WebSocket plugin data handler.
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-websocket/src/main/java/org/apache/shenyu/plugin/websocket/handler/WebSocketPluginDataHandler.java