@Override
protected Object doTransform(Object src, String outputEncoding) throws TransformerException
{
Order order = (Order) src;
Book book = order.getBook();
String body = "Thank you for placing your order for " +
book.getTitle() + " with the Mule-powered On-line Bookstore. " +
"Your order will be shipped to " +
order.getAddress() + " by the next business day.";
String email = order.getEmail();
RequestContext.getEventContext().getMessage().setOutboundProperty(MailProperties.TO_ADDRESSES_PROPERTY,