code: @Override
      public int getIndex(String xmlName) {
          int length = getLength();
  
          for (int i = 0; i < length; i++) {
              if (getQName(i).equals(xmlName)) {
                  return i;
              }
          }
          return -1;
      }
docs: <b>SAX2 Attributes</b> method (don't invoke on parser);