code: public List<Node> pathQuery(String pathQuery) throws XmlModelException {
          return new PathQueryParser(root).pathQuery(pathQuery);
      }
docs: Find elements through an XPath like pathQuery
  e.g.
  /fruits/orange
  will find the orange element:
  <fruits><orange/></fruits>
  
  @param pathQuery path pathQuery string
  @return {@code List} of {@code Node} objects matching the query
  @throws XmlModelException XML model exception