PS: There is also this file [ChromeDriver](https://chromedriver.chromium.org/downloads) but I am not really sure if it is an alternative to "codeception/module-webdriver" or when to use it. I havent studied it yet.
If you want to see the code coverage, do what is described in the documentation (link above). Plus make sure that your PHP contains [xDebug](https://gist.github.com/odan/1abe76d373a9cbb15bed)! And mind the difference in settings of xDebug2 and xDebug3! If xDebug is missing, you will receive error "No code coverage driver available".