code: public HtmlEmailImpl setHtmlMsg(String aHtml) throws EmailException {
  	if (StringUtil.isEmpty(aHtml)) {
  	    throw new EmailException("Invalid message supplied");
  	}
  	this.html = aHtml;
  	return this;
      }
docs: Set the HTML content.
  
  @param aHtml A String.
  @return An HtmlEmail.
  @throws EmailException see javax.mail.internet.MimeBodyPart for definitions