How to use the blocking-proxy.BPClient function in blocking-proxy

// Mix all other driver functionality into Protractor.
    Object.getOwnPropertyNames(WebDriver.prototype).forEach(method => {
      if (!this[method] && typeof(webdriverInstance as any)[method] === 'function') {
        if (methodsToSync.indexOf(method) !== -1) {
          ptorMixin(this, webdriverInstance, method, this.waitForAngular.bind(this));
        } else {
          ptorMixin(this, webdriverInstance, method);
        }
      }
    });

    this.driver = webdriverInstance;
    if (opt_blockingProxyUrl) {
      logger.info('Starting BP client for ' + opt_blockingProxyUrl);
      this.bpClient = new BPClient(opt_blockingProxyUrl);
    }
    this.element = buildElementHelper(this);
    this.$ = build$(this.element, By);
    this.$$ = build$$(this.element, By);
    this.baseUrl = opt_baseUrl || '';
    this.getPageTimeout = DEFAULT_GET_PAGE_TIMEOUT;
    this.params = {};
    this.resetUrl = DEFAULT_RESET_URL;

    let ng12Hybrid_ = false;
    Object.defineProperty(this, 'ng12Hybrid', {
      get: function() {
        return ng12Hybrid_;
      },
      set: function(ng12Hybrid) {
        if (ng12Hybrid) {

}
        // Mix all other driver functionality into Protractor.
        Object.getOwnPropertyNames(selenium_webdriver_1.WebDriver.prototype).forEach(method => {
            if (!this[method] && typeof extendWDInstance[method] === 'function') {
                if (methodsToSync.indexOf(method) !== -1) {
                    ptorMixin(this, extendWDInstance, method, this.waitForAngular.bind(this));
                }
                else {
                    ptorMixin(this, extendWDInstance, method);
                }
            }
        });
        this.driver = extendWDInstance;
        if (opt_blockingProxyUrl) {
            logger.info('Starting BP client for ' + opt_blockingProxyUrl);
            this.bpClient = new blocking_proxy_1.BPClient(opt_blockingProxyUrl);
        }
        this.element = buildElementHelper(this);
        this.$ = element_1.build$(this.element, selenium_webdriver_1.By);
        this.$$ = element_1.build$$(this.element, selenium_webdriver_1.By);
        this.baseUrl = opt_baseUrl || '';
        this.getPageTimeout = DEFAULT_GET_PAGE_TIMEOUT;
        this.params = {};
        this.resetUrl = DEFAULT_RESET_URL;
        this.debugHelper = new debugger_1.DebugHelper(this);
        let ng12Hybrid_ = false;
        Object.defineProperty(this, 'ng12Hybrid', {
            get: function () {
                return ng12Hybrid_;
            },
            set: function (ng12Hybrid) {
                if (ng12Hybrid) {