public void randomDopdownChoice() {
        // Initialization of Webdriver driver is outside of this method

        // Instantiate random number generator
        Random random = new Random();
        // This is needed just for waits
        Actions actions = new Actions(driver);

        // Page for example
        driver.get("http://demo.guru99.com/test/newtours/reservation.php");

        // Instantiate element to manipulate select
        WebElement selectElement = (new WebDriverWait(driver, 10))
                .until(ExpectedConditions.presenceOfElementLocated(By.name("fromPort")));
        Select select = new Select(selectElement);

        // Find all select options and put them into list, then get list size
        List<WebElement> selectOptions = driver.findElements(By.cssSelector("select[name='fromPort'] option"));
        int number_of_options = selectOptions.size();

        // For demo purposes I select five random elements with 2 second pauses
        for (int j=0;j < 5; j++) {
            actions.pause(Duration.ofSeconds(2)).perform();
            select.selectByIndex(random.nextInt(number_of_options));
        }

        // Final pause
        actions.pause(Duration.ofSeconds(2)).perform();
    }