Skip XML declaration in JAXB

By default JAXB outputs XML declaration when you marshal your objects:
For example, this:

JAXBContext context = JAXBContext.newInstance(Command.class, Message.class...);
Marshaller marshaller = context.createMarshaller();
marshaller.marshal(command, writer);

will output this:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<message channel="test"/>

If you don't need to use XML declaration in your JAXB output, it is easy to skip it by setting property "jaxb.fragment" to true. So, this:

JAXBContext context = JAXBContext.newInstance(Command.class, Message.class...);
Marshaller marshaller = context.createMarshaller();
marshaller.setProperty("jaxb.fragment", Boolean.TRUE);
marshaller.marshal(command, writer);

will output only this:

<message channel="test"/>