docs: public final MailSenderStd lazyGetMailSender() throws Exception {
      String beanName = getMailSenderName();
      MailSenderStd mailSender = (MailSenderStd) this.beansMap.get(beanName);
      if (mailSender == null) {
        mailSender = new MailSenderStd(lazyGetLogger());
        mailSender.setWebAppPath(this.webAppPath);
        this.beansMap.put(beanName, mailSender);
        lazyGetLogger().info(null, AFactoryAppBeans.class, beanName
          + " has been created.");
      }
      return mailSender;
    }