code: public void setMessage(String message) {
  
          checkFrozen();
          if (isEnabled() && CmsStringUtil.isEmptyOrWhitespaceOnly(message)) {
              throw new CmsIllegalArgumentException(Messages.get().container(Messages.ERR_LOGIN_MESSAGE_BAD_MESSAGE_0));
          }
          m_message = message;
      }
docs: Sets the message to display.<p>
  
  @param message the message to set