public void setServerContainer(@Nullable final ServerContainer serverContainer) {
        this.serverContainer = serverContainer;
    }
Set server container.

@param serverContainer not null
shenyu-client/shenyu-client-websocket/shenyu-client-spring-websocket/src/main/java/org/apache/shenyu/client/spring/websocket/init/ShenyuServerEndpointerExporter.java