How to use the @wdio/devtools-service.default function in @wdio/devtools-service

isInitialized = true;
            }))
            .catch(err => {
                initError = err;
            });

        deasync.loopWhile(() => !isInitialized && !initError);

        if (initError) {
            throw _this.errHelper.getSeleniumInitError(initError);
        }

        _this.driver.setTimeout({ 'implicit': _this.waitForTimeout });

        // initialize DevTools service. this is used to collect network requests
        var devTools = new DevToolsService();
        devTools.beforeSession(null, _this.driver.capabilities);
        if (devTools.isSupported) {
            // prevent devtools-service from generating logs
            // this should be done in a different, more proper, way, but for now just init the logger used by devtools-service:CommandHandler
            // so it cannot be inited by the service itself.
            WDIOLogger('@wdio/devtools-service:CommandHandler');
            global.browser = _this.driver;
            devTools.before();
            _this.driver.on('Network.responseReceived', (params) => {
                if (_this.networkCollect) {
                    _this.networkRequests.push(params.response);
                }
            });
        }

        // reset browser logs if auto collect logs option is enabled