top.string = new ArrayList();
top.string.add(" ");
top.string.add("\n newline, 6 spaces, newline, 3 spaces\n ");
MarshallerImpl marshaller = new MarshallerImpl();
StringWriter writer = new StringWriter();
marshaller.marshal(schema, null, top, writer);
// TODO: the xml diff trims whitespaces...
//assertXmlFileContent("IgnorableWhitespaceContent.xml", writer.getBuffer().toString());
//System.out.println(writer.getBuffer().toString());