code: public Element cloneSvgElement(Element source) {
  		if (source == null || source.getNodeName() == null) {
  			return null;
  		}
  		if ("#text".equals(source.getNodeName())) {
  			return Document.get().createTextNode(source.getNodeValue()).cast();
  		}
  		Element clone = createElementNS(Dom.NS_SVG, source.getNodeName(), Dom.createUniqueId());
  		cloneAttributes(source, clone);
  		for (int i = 0; i < source.getChildCount(); i++) {
  			Element child = source.getChild(i).cast();
  			clone.appendChild(cloneSvgElement(child));
  		}
  
  		return clone;
  	}
docs: Clone a single SVG element.
  
  @param source
  The source SVG element.
  @return Returns the clone.