code: @Override
      public String getURI() {
          String URI = "";
  
          switch (nodeKind) {
          case ELEMENT:
          case ATTRIBUTE:
          case NAMESPACE:
              if (!"".equals(qName.getPrefix())) {
                  URI = qName.getNamespaceURI();
              }
              break;
          default:
              // Do nothing.
          }
  
          // Return URI or empty string.
          return URI;
      }
docs: {@inheritDoc}