@Override
    public String marshal ( Object o ) throws Exception {
        XMLContext context = new XMLContext();
        Marshaller m = context.createMarshaller();
        StringWriter sw = new StringWriter();
        m.setWriter(sw);
        return sw.toString();
    }
{@inheritDoc}

@see marshalsec.MarshallerBase#marshal(java.lang.Object)
src/main/java/marshalsec/Castor.java