code: public Date getBirthdayAsDate() {
      if (isBlank(getBirthday()) || getBirthday().split("/").length < 2) {
        return null;
      }
  
      return toDateFromShortFormat(birthday);
    }
docs: The user's birthday, typed to {@code java.util.Date} if possible.
  
  @return The user's birthday, or {@code null} if unavailable or only available in month/year format.