Problem with Batik

[Velika Srbija]

I encountered a problem with rendering SVGGraphics2D content.
Here is the code snippet:
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DOMImplementation domImpl = SVGDOMImplementation.getDOMImplementation();
String svgNamespaceURI = SVGDOMImplementation.SVG_NAMESPACE_URI;
Document document = domImpl.createDocument(svgNamespaceURI, "svg", null);
Element root = document.getDocumentElement();
root.setAttributeNS(null, "width", "450");
root.setAttributeNS(null, "height", "500");
SVGGraphics2D svgGenerator = new SVGGraphics2D(document);
svgGenerator.stream(new java.io.OutputStreamWriter(System.out, "UTF-8"), true);
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The problem is that there are no "width" and "height" attributes in the root element "svg" of the generated DOM tree.
What is goin' on?
No errors, no exceptions, but they are missing.?