GoSvgWriter Unicode support

Do GoSvgWriter functions, such as WriteAttrVal and WriteTextBody, support writing Unicode text to SVG output?

Here’s the definition of WriteAttrVal. The reason this method exists is to provide a method that will work with either an XmlTextWriter or XML DOM.
public virtual String WriteAttrVal(String name, String val) {
String s = val;
if (name != null && s != null) {
XmlTextWriter w = this.XmlTextWriter;
if (w != null) {
w.WriteAttributeString(name, s);
} else {
SetWriterElementAttribute(name, s);
return s;
SetWriterElementAttribute calls this.WriterElement.SetAttribute.