How to use the node-opcua-service-endpoints.UserTokenType function in node-opcua-service-endpoints

"use strict";
var should = require("should");
var assert = require("node-opcua-assert").assert;


var endpoints_service = require("node-opcua-service-endpoints");

var GetEndpointsResponse = endpoints_service.GetEndpointsResponse;


var EndpointDescription = require("node-opcua-service-endpoints").EndpointDescription;
var ApplicationType = require("node-opcua-service-endpoints").ApplicationType;
var UserTokenType = require("node-opcua-service-endpoints").UserTokenType;
var MessageSecurityMode = require("node-opcua-service-secure-channel").MessageSecurityMode;

exports.fixture1 = (function () {
    // empty  GetEndpointsResponse
    return new GetEndpointsResponse();

})();

exports.makeEndPoint = function () {

    var data = {
        endpointUrl: "toto",

        server: {

            applicationUri: "OPCUA  node-js",