docs: public static NodeList evaluateXpathExpression(Document dom, String xpathExpr)
  			throws XPathExpressionException {
  		XPathFactory factory = XPathFactory.newInstance();
  		XPath xpath = factory.newXPath();
  		XPathExpression expr = xpath.compile(xpathExpr);
  		Object result = expr.evaluate(dom, XPathConstants.NODESET);
  		return (NodeList) result;
  	}