code: function (elements) {
              var elements = elements || [];
              for (var i = 0; i < elements.length; i++) {
                  if (elements[i].classList.contains(this.stylings.error)) {
                      elements[i].classList.remove(this.stylings.error);
                      var parent = elements[i].parentNode;
                      parent.removeAttribute("data-hint");
                  }
              }
          }
docs: Performs the default validation
  action on revalidated elements.
  
  @param       HTMLFormElement