How to keep line feeds with XmlOptions?

[Xing, Charlie]

Hi:
I have string like:

        String demoString  = "<Demo content="first line
                                second line
                                third line"
                        type="user"/>";
        When I'd like to parse it to xml object:
                XmlObject demoObj = XmlObject.Factory.parse(demoString);
                DemoDocument d = (DemoDocument)demoObj;

        Then I lose line feeds when get content from the demo:
                String demoContent = d.getDemo().getContent();

                demoContent : ""<Demo content="first line  second line
third line" type="user"/>";"

        How can I keep line feeds with XmlOptions?

Thanks
Xing yun