docs: public static ExpectedCondition<Boolean> urlContains(final String fraction) {
      return new ExpectedCondition<Boolean>() {
        private String currentUrl = "";
  
        @Override
        public Boolean apply(WebDriver driver) {
          currentUrl = driver.getCurrentUrl();
          return currentUrl != null && currentUrl.contains(fraction);
        }
  
        @Override
        public String toString() {
          return String.format("url to contain \"%s\". Current url: \"%s\"", fraction, currentUrl);
        }
      };
    }