public PageObject login(Credentials credentials) {

        String usernameValue = (String) AbstractStepsHolder.getVariable(StoriesRunner.USER_LOGIN_VAR);
        if (usernameValue == null)
            usernameValue = credentials.getUsername();
        String passwordValue = (String) AbstractStepsHolder.getVariable(StoriesRunner.USER_PASSWORD_VAR);
        if (passwordValue == null)
            passwordValue = credentials.getPassword();

        UtilsSteps.waitForPageLoaded(StoriesRunner.getWebDriver());
        LoginPage page = AbstractStepsHolder.getCurrentPage();
        page.getField("Логин").clear();
        page.getField("Логин").type(usernameValue);
        if (System.getProperty("environment").contains("_op")) {
            System.err.println(String.format(">>>>>>>>> Credentials [username=%s, password=%s]", usernameValue, "******"));
        }else{
            System.err.println(String.format(">>>>>>>>> Credentials [username=%s, password=%s]", usernameValue, passwordValue));

        }
        page.getField("Пароль").clear();
        page.getField("Пароль").click();

        // To close "screen keyboard" with very large z-index
        try {
            StoriesRunner.getWebDriver().manage().timeouts().implicitlyWait(2, TimeUnit.SECONDS);
            List<WebElementFacade> closeBtns = findAll(By.xpath("//div[@class='ui-keyboard-close-icon']"));
            if (closeBtns.size() > 0)
                closeBtns.get(0).click();
        } finally {
            StoriesRunner.getWebDriver().manage().timeouts().implicitlyWait(StoriesRunner.getImplicitTimeoutPreference(), TimeUnit.SECONDS);
        }
        page.getField("Пароль").type(passwordValue);
        page.getField("Войти").click();

        //При превышении лимита одновременно подключаемых пользователей ждем 3 сек и пробуем снова
        getDriver().manage().timeouts().implicitlyWait(1, TimeUnit.SECONDS);
        int countAttempts = StoriesRunner.getNumberOfLoginAttempts();
        try {
            while (page.find(By.xpath("//*[contains(text(),'лимит одновременных подключений')]")).isEnabled() && countAttempts > 0) {
                try {
                    System.out.println("Превышен лимит подключений. Засыпаем на 15 сек");
                    Thread.sleep(15000);
                } catch (InterruptedException ex) {
                    System.out.print(ex.toString());
                }
                getDriver().manage().timeouts().implicitlyWait(StoriesRunner.getImplicitTimeoutPreference(), TimeUnit.SECONDS);
                page.getField("Логин").clear();
                page.getField("Логин").type(usernameValue);
                System.err.println(String.format(">>>>>>>>> Credentials [username=%s, password=%s]", usernameValue, passwordValue));
                page.getField("Пароль").clear();
                page.getField("Пароль").click();
                try {
                    StoriesRunner.getWebDriver().manage().timeouts().implicitlyWait(2, TimeUnit.SECONDS);
                    List<WebElementFacade> closeBtns = findAll(By.xpath("//div[@class='ui-keyboard-close-icon']"));
                    if (closeBtns.size() > 0)
                        closeBtns.get(0).click();
                } finally {
                    getDriver().manage().timeouts().implicitlyWait(1, TimeUnit.SECONDS);
                }
                page.getField("Пароль").type(passwordValue);
                page.getField("Войти").click();
                countAttempts--;
            }
        } catch (Exception e) {
        } finally {
            getDriver().manage().timeouts().implicitlyWait(StoriesRunner.getImplicitTimeoutPreference(), TimeUnit.SECONDS);
        }