How to use the node-opcua-common.OPCUASecureObject function in node-opcua-common

const once = require("once");
const delayed = require("delayed");


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

const GetEndpointsRequest = endpoints_service.GetEndpointsRequest;
const GetEndpointsResponse = endpoints_service.GetEndpointsResponse;
const MessageSecurityMode = require("node-opcua-service-secure-channel").MessageSecurityMode;
const toURI = require("node-opcua-secure-channel").toURI;
const SecurityPolicy = require("node-opcua-secure-channel").SecurityPolicy;

const debugLog = require("node-opcua-debug").make_debugLog(__filename);
const doDebug = require("node-opcua-debug").checkDebugFlag(__filename);

const OPCUASecureObject = require("node-opcua-common").OPCUASecureObject;

const ClientSecureChannelLayer = require("node-opcua-secure-channel/src/client/client_secure_channel_layer").ClientSecureChannelLayer;
const ClientSession = require("./client_session").ClientSession;


const defaultConnectionStrategy = {
    initialDelay: 1000,
    maxDelay: 20*1000,// 20 seconds
    maxRetry: -1, // infinite
    randomisationFactor: 0.1
};

/**
 * @class OPCUAClientBase
 * @extends EventEmitter
 * @param options

if(!fs.existsSync(filename)) {
            throw new Error("Cannot find filename " + filename + " ( __dirname = " + __dirname);
        }
    }
    return filename;
}

const debugLog = require("node-opcua-debug").make_debugLog(__filename);

const StatusCodes = require("node-opcua-status-code").StatusCodes;

const endpoints_service = require("node-opcua-service-endpoints");
const GetEndpointsResponse = endpoints_service.GetEndpointsResponse;
const ApplicationType = endpoints_service.ApplicationType;

const OPCUASecureObject = require("node-opcua-common").OPCUASecureObject;


const discovery_service = require("node-opcua-service-discovery");
const FindServersRequest = discovery_service.FindServersRequest;
const FindServersResponse = discovery_service.FindServersResponse;
const LocalizedText = require("node-opcua-data-model").LocalizedText;

const default_server_info = {

    // The globally unique identifier for the application instance. This URI is used as
    // ServerUri in Services if the application is a Server.
    applicationUri: "urn:NodeOPCUA-Server-default",

    // The globally unique identifier for the product.
    productUri: "NodeOPCUA-Server",