How to use the restify-clients.createStringClient function in restify-clients

SERVER.listen(PORT, function () {
        client = restifyClients.createStringClient('http://' + HOST + ':' +
            PORT);
        _.forEach(config.routes, function (route, name) {
            _.forEach(route, function (source, method) {
                if (method === 'delete') {
                    /* eslint-disable no-param-reassign */
                    method = 'del';
                    /* eslint-enable no-function-reassign */
                }

                if (method === 'options') {
                    /* eslint-disable no-param-reassign */
                    method = 'opts';
                    /* eslint-enable no-function-reassign */
                }
                barrier.start(method + name);
                client[method]('/' + name, function (err, req, res, obj) {

// jscs:disable maximumLineLength

'use strict';

var chai = require('chai');
var _ = require('lodash');
var restify = require('restify-clients');
var demoServer = require('../example/demo');

var assert = chai.assert;
var client = restify.createJsonClient({
    url: 'http://localhost:3003'
});
var stringClient = restify.createStringClient({
    url: 'http://localhost:3003'
});

// star tests
describe('Integration tests using the demo app', function() {
    before(function(done) {
        demoServer.listen(3003, done);
    });

    after(function(done) {
        client.close();
        stringClient.close();
        demoServer.close(done);
    });

    describe('Simple handler chains', function() {

HOT_RELOAD_TMP_DIR + '/fooGet.js', function (err3) {

                        assert.ifError(err3);
                        var client = restifyClients.createStringClient('http://'
                            + HOST + ':' + PORT);
                        client.get('/foo', function (err4, req, res, obj) {
                            client.close();
                            assert.ifError(err4);
                            assert.equal('yes', res.headers.reload);
                            return done();
                        });
                    });
            });