code: protected void appenHtmlFooter(StringBuffer buffer) {
  
          if (m_configuredFooter != null) {
              buffer.append(m_configuredFooter);
          } else {
              buffer.append("  </body>\r\n" + "</html>");
          }
      }
docs: Append the html-code to finish a html mail message to the given buffer.
  
  @param buffer The StringBuffer to add the html code to.