public static XxlRpcInvokerFactory getInstance() {
        return instance;
    }
xxl-rpc invoker factory, init service-registry

@author xuxueli 2018-10-19
larkmidtable-web/larkmt-rpc/src/main/java/com/larkmidtable/rpc/remoting/invoker/XxlRpcInvokerFactory.java