final HtmlTextInput login = form.getInputByName("login");
login.setValueAttribute("testscribeup@yahoo.fr");
final HtmlPasswordInput passwd = form.getInputByName("passwd");
passwd.setValueAttribute("testpwdscribeup");
final HtmlButton button = form.getButtonByName(".save");
final HtmlPage confirmPage = button.click();
form = confirmPage.getFormByName("rcForm");
final HtmlSubmitInput submit = form.getInputByName("agree");
final HtmlPage callbackPage = submit.click();
final String callbackUrl = callbackPage.getUrl().toString();
logger.debug("callbackUrl : {}", callbackUrl);